Trig check my work please?
42,204 results, page 64

trig
As a hotair balloon rises vertically, its angle of elevation from a point P on level ground d = 140 kilometers from the point Q directly underneath the balloon changes from 15°10' to 29°30' (see the figure). Approximately how far does the balloon rise during this period? (... 
trig
as a hot air balloon rises vertically, its angle of elevation from point P on level ground 110 kilometers from th epoint Q directly underneath the balloon changes from 15 degree 5' to 31 degree 45'. Approximately how far does the balloon rise during this period? a. 38.4 km b. ... 
PreCalc P lease check
Please check my answers; 1.Which of the folowing is another representation of (3,pi)? (3,120degree) (3,0 degree)I think it is this one?? ((3,0 degree) 2.Which is not a representation of (5,150 degree) (5,30 degree)I think it is this one? (5,330 degree) (5,510 degree) 3.... 
English
Could you please check the following sentences? Thank you very much. 1) He gives Coketown human characteristics (not "a human aspect"). 2) Coketown starts to assume human characteristics/connotations He personifies the town. 3) He refers to his students emphatically with their... 
physics
what is the difference between work and workdone I hope the following references will help you: http://www.ac.wwu.edu/~vawter/PhysicsNet/Topics/Work/DefinitionWork.html http://en.wikipedia.org/wiki/Mechanical_work http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/energy/u5l1aa.... 
chem
If an ideal gas is allowed to expand into a vacuum, this means that the external pressure is 0. This doesn't affect the internal pressure though, correct? For example: I have a problem in which one mole of an ideal gas at 300. K and at a volume of 10.0 L expands isothermally ... 
Science :check my answers
Here are some questions I had for hw, I answered some of them, can someone check my answers and help me with the ones i didn't answer, thanks: 1.Which constellations are visible from Canada in all seasons? My Answer:Ursa Major, Ursa Minor, Lynx,Cephus, Cassiopia, ... 
English
1. I am good at mimicking others. I want to mimick President No Muhyeon for the elderly people. 2. I am good at walking on my hands. I want to walk on my hands to surprise the elderly people. 3. I am good at doing hard work. I want to carry heavy things for the club members ... 
Algebra
Square roots. Woohoo. Want to check some work I did. 1. Perform indicated operations 3sqrt[3]+2sqrt[27]sqrt[12] 3sqrt[3]+2sqrt[3*9]sqrt[2*6] 3sqrt[3]+3*2sqrt[3]2sqrt[3] 3sqrt+6sqrt[3]2sqrt[3] = 7sqrt[3] 2.Simplify sqrt[49x^12y^4z^8] = 7x^6y^2z^4 3.Multply (8sqrt[6]+3sqrt[2... 
Physics
The force shown in Figure 717 moves an object from x = 0 to x = 75 m, where the interval between vertical dashed lines is 25 m. (a) How much work is done by the force? (b) How much work is done by the force if the object moves from x = 25 to x = 75 m? 
Dianamic sckul
Tom takd 3 days to do a piece work while jerry take only one day for the same . Together. They both can finish the job in 15 days. In how many days tom will finish the work. 
Physics
The force shown in the figure moves an object from x = 0 to x = 60 m, where the interval between vertical dashed lines is 20 m. (a) How much work is done by the force? (b) How much work is done by the force if the object moves from x = 20 to x = 60 m? (IN J) 
science
you do 185 J of work pulling a cart up a ramp. if the ramp does 153 J of work,what is the efficient of the ramp? A)82.7 percent B)121.0 percent C)32.0 percent D)338.0 percent 
Physics
A force of 3.00 N acts through a distance of 12m in the direction of the force.Find the work done. Work=force*distance*CosTheta where theta is the angle between force and distance. 
Math (Right Triangle Trig)
Suppose tan(theta)=5/7 and theta belongs to Quadrant III, find the exact value of sec(theta)? I already took the steps to solve this problem but I am confused if whether or not sec(theta)is positive or negative sqrt(74)/7 Any help is greatly appreciated! 
Trig
A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 3 mi apart, to be angle x = 31° and angle y = 49°, as shown in the figure. (Round your answers to two decimal places.) Find the distance of the plane from point A. Find the ... 
Trig/PreCalc
Could someone please help me on this problem. I'm really confused, and this assignment is due tomorrow. Solve the logarithmic equation algebraically. Approximate the result to three decimal places. log4xlog4(x1)=1/2 To start off the equation, I know you would do the ... 
trig
A plane is flying with an airspeed of 150 miles per hour and heading 155°. The wind currents are running at 25 miles per hour at 160° clockwise from due north. Use vectors to find the true course and ground speed of the plane. 
trig
Question #1 Suppose that θ is an angle in standard position whose terminal side intersects the unit circle at −−2029,2129 Find the exact values of cscθ cotθ sinθ . 
Trig
Having completed another stimulating school day, Michael and Alyssia both leave at the same time. They walk together for a while and then go their separate ways. These paths make a 60° angle with one another. Michael toddles along at 2ft/sec, while Alyssia speeds off at 3ft/... 
English Improving writing
Ok this what I have now Thanks to all of you for your help Brain storming revised The problem is Jack and Rachel often has nothing to do Bonnie and Molly is working extra and have to work over time Melanie and Jessica share an administrative assistant Larry assistant only ... 
english
1. You have to feed the baby with water sometimes. 2. You have to feed water for the baby sometimes. 3. The baby must have peed. You have to change the diaper. The diaper is wet. Will you bring a new diaper? 4. The baby gave out dung. Bring me a baby tissue. I will clean that ... 
social studies (check answers)Mrs.Sue
THanks and thanks again... 1.D 2.C 3.A Brazil’s culture reflects what unique aspect of its colonial history? A. its Roman Catholic missionary roots B. its ties to the West African slave trade C. its rule and settlement by the Portuguese D. its peaceful blending of native and... 
Math
I was wondering if someone could help me check my work on this problem and see if I'm correct. Consider the experiment of drawing two cards without replacement from an ordinary deck of 52 playing cards. What are the odds in favor of drawing a spade and a heart? There are 52 ... 
Physics
no idea all HELP appreciated!! A shotputter puts a shot (weight = 70.3 N) that leaves his hand at distance of 1.45 m above the ground. (a) Find the work done by the gravitation force when the shot has risen to a height of 2.15 m above the ground. Include the correct sign for ... 
Economics Quick Question
I'm going to type part of this passage and you have to fill in the blank. Could you check my answer here are the words that may go in that blank. elasticity shortage equilibrium price supply productivity surplus profit techonology Passage: Let's start with that part time job ... 
SpanishPlase check
I had to make some negative sentences. Please check Thank you No tengo nada que hacer. No bebo nunca el batido. No bailo nunca. No hablo nunca francés. Tampoco hablo el alemán No compro ninguno. No quiero comer nada No quiero nunca contestar en la clase. Nadie uso este telef... 
English+ check!!!
from informal to formal: Informal: After work, Rebecca hung with her friends for a bit. Nothing much happening. She should of headed off to the store for dinner, but instead she grabbed some junk food. Killed some time by checking out a softball game in the park. formal: After... 
Algebra 2  Direct Variation
I already did this problem but i decided to check my self since my answer wasn't withthe status quo of the rest of the answers i checked twice and got the same answer. But will someone double check me. The designers fo the Parthenon, a Greek Temple completed in 432 B.C., ... 
Trig
assume A= alpha using complementary rule how do I solve for alpha? cos(2A+40) =sin(3A60) I don't understand how to start the question. What are the steps in solving for alpha. Do i get cos to equal sin somehow? 
trig
what are the values of theta in the interval 0 degrees is lessthan or equal to theta is less than or equal to 360 degrees that satisfy the equation tan theta minus square root of 3 equals 0? 
trig
To calculate the height of a cliff, a surveyor takes the following measurements. The cliff's shadow is 12m, while at the same time a meter stick has a shadow of 2m. Draw a diagram and find the height of the cliff. 
trig
karen, (who is 1,6m tall) wishes to calculate the height of a tall tree. she stands 50m from the base of the tree and measures its angle of elevation to be 36 degrees. determine the height of the tree? 
trig
The captain of a ship at sea sights a lighthouse which is 120 feet tall. The captain measures the the angle of elevation to the top of the lighthouse to be 19 ^\circ. How far is the ship from the base of the lighthouse? 
Trig/PreCal
Show that the distance between the points (x,y) and the line Ax + By + C = 0 is: D = (Ax + By + C) / sqrt(A^2 + B^2) So, would you start out by multiplying sqrt (A^2 + B^2) to both sides and then it would become: sqrt (A^2 + B^2)D = Ax + By + C Then square both sides, D^2(A^2... 
trig
a guy wire reaches from the top of a 125 meter television transmitter tower to the ground.The wire makes a 63' angle with the ground.Find the length of the guy wire. 
trig
From post C, An airplane and a helicopter travel to different islands.The plane travels.415 km N 60degrees45minutes E to island A. and the helicopter travels to island B at S 19degrees5minutes E for 120 km. what is the distance between tthe two island 
Trig
a) Determine the equation of a sine function that would have a range of {y€R7<(or equal) Y <(or equal) 1} and a period of 135degrees. b) determine the cosine function that results in the same function an part (a). Any help provided will be greatly appreciated. 
Geometry trig ratio
An observer (o) spots a plane flying at a 55 degrees angle to his horizontal line of sight. if the plane is flying at an altitude of 21,000 ft, what is the distance (x) from the plane (p) to the observer (o)? 
Algebra2/Trig
sqr(x^24)+(x^2)/x^2+1 I got ((x^2+1)*sqr(x^24)+x^2)/x^2+1 But my teacher gave (sqr(x^24)+x^2)/x^2+1 I did the problem over again but I can't figure out why my teacher got the answer. Can someone confirm that my teacher is right or am I right? sqr=square root ^=to the power ... 
trig
The captain of a ship at sea sights a lighthouse which is 280 feet tall. The captain measures the the angle of elevation to the top of the lighthouse to be 25. How far is the ship from the base of the lighthouse? 
// calculus  trig derivatives
how do i do i do y=cos(radt)+ rad(cost)?  f(x) = (3x^2) (csc4x)^4 // f'(x)=? my notes say : f'(x) = (3x^2)5(csc4x)^4(csc(4x)(tan4x)(4)+(csc4x)^5(6) I redid it and i got : f'(x) = (3x^2)5(csc4x)^4(csc4x)(cot4x)(4) + (csc4x)^5(6x) which is correct? if its my notes why? 
Derivative
Can you help me find the derivative of y= cos(x)/1+sin(x).. the / is a fraction bar. I have a hard time finding trig derivatives because I don't really know what the derivative of cos,sin ,or tan would be honestly. 
TRIG MATH
If sin theta= 7/8, then the value of 1/cot theta in the interval 3pi/2<theta is? okay I've done this question twice. The 1st time I got 7/sqrt15 and the next time got sqrt15/7. Are either of these right or am I totally messed??? I've got myself confused. 
precalculus
find the values of the requested trig functions using the given value and quadrant in which the point corresponding to the angle lies. quadrant II; sinθ=4/5 find cosθ and tan θ 
Math/trig
Solve the equation in the given Domain: 1cos theta/ sin theta = sqr3, 0degrees <or equal to theta < 369 degrees cos4x + cos 2x =0, 0<or equal to x < pi 
Calculus
The hemispherical tank shown is full of water. Given that water weighs 62.5 lb/ft3, find the work required to pump the water out of the tank.  What is shown is just the tank (a hemisphere) with a radius of 5 ft.  First I calculated the Volume of the ... 
teachers
Why don't most teachers at public schools let us think for ourselves? it's insulting. I am in English 3 and my teacher does all our work for us. What should we do? Here is my advice. Either bite your lip, and remain quiet, or discuss it privately with the teacher. Be ... 
algebra
Suppose Paul kicks a soccer ball straight up into the air with an initial velocity of 96 feet per second. The function f(x) = 16t2 + 96t gives the height, in feet, of the soccer ball after t seconds.Show all work to find the axis of symmetry algebraically. You must show all ... 
english
I wrote five sentences but they all have to have different verb tense. Can u let me know if right are let me know what I need work on. 1.This class made me look at my financial future. Look is verb and its in present tense, 2. Financial planning is a class all students need to... 
physics bobpursly help still having trouble
A satellite in a circular orbit around earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. A large fragment m=60 kg is ejected in the backwards direction so that it is stationary with respect to the earth and falls directly to the ... 
Computer
Multiple Choice Which of the following study tools would work well for memorizing vocabulary? A. making an outline B. summarizing the textbook C. flash cards D. comparing notes to the text Which of the following can be helpful when you are studying for a test? A. hanging out ... 
math check
Posted by Nora 56 on Sunday, June 2, 2013 at 7:32pm. Sorry to repost but no one answered after I posted on the 2nd,please help, Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is lefthanded. (Give your answers correct ... 
trig
The angle of elevation from the top of a house to a jet flying 2 miles above the house is x radians. If d represents the horizontal distance, in miles, of the jet from the house, express d in terms of a trigonmetric function of x. 
writing
Why do nonusers of performanceenhancing drugs work harder and have more dedication? Personally I think this question is biased. Just because someone uses performance enhancing drugs doens't mean they haven't worked just as hard if not harder than someone who hasn't. The same... 
math 5
estimate the number of pencil cases needed to hold 10 thousand pennies . Show your work. 2 estimate the height of a stack of 50 thousand pennies . show your work. 
Physics
A 25 kg box is dragged across a floor by a rope that makes an angle of 60 degrees with the horizontal. The tension in the rope is 100 N while the box is dragged 15 m. A) how much work is done by tension? B) how much work is done by gravity? 
physics
barrel is 70kg, and height of dock is 2 meters. How much work do you do when lifting the barrel? was sure if you convert the 70kg to newtons, then multiply it by the 2 meters?? Work= mass*g*distance. Yes, convert it. 
Physical Science
What is the kinetic energy of a 1850 kg car that is traveling at 58.0 km/h? B. How much work was done to give the car this kinetic energy assuming the car starts from rest? C. How much work must be done to stop the car? 
prealgebra
can you please help me and help me solve this and show work: Identify the percent of change as an increase or a decrease. Then find the percent of change. #1.) Original:45 New:30 Please help i don't understand how to solve and show work 
Chemistry
how do I work out the molecular mass of a substance such as oxide of arsenic? If I'm trying to work out the oxide part of this problem, where does hydrogen come into it? You have to know the mass, and how many moles. There are other methods. Hydrogen? Depends on the problem. 
Statistics
It is reported that 72% of working women use computers at work. Choose 5 working women at random. Find a. The probability that at least 1 doesn't use a computer at work b. The probability that all 5 use a computer in their jobs 
Physics
A girl having mass of 35 KG sits on a trolley of mass 5 KG. The trolley is given an initial velocity of 4 m/s by applying a force. The trolley comes to rest after travelling a distance of 16 m. (i) How much work is done on the trolley? (ii) How much work is done by the girl? 
math
mr. pursley, have you ever worked geo., trig. etcwith no calu.s with the heat on , when it had to be right?wheather you blew up your target or something else or the bld. collapsed or was built in the correct place? i'm not an answer grazer, but qam an answer seeker.I'm trying ... 
Physics
A tugboat pulls a ship with a constant horizontal force of 6000N and causes the ship to move through a harbor. The water exerts a constant drag force on the ship of 500N. How much work is done on the ship if it moves a distance of 4.0 km? Force is causing parallel displacement... 
Health care please check my answer
Please check my answer thank you A 15 year old female patient has experienced daily nausea for the past two months. The patient states that she feels like " I've eaten something that has upset my stomach" The patient has noticed a weight gain of 10 lb with in this two month ... 
Physics  work done
A variable force F acts through a displacement d. The magnitude of the force is proportional to the displacement, so F=kd, where k is constant. a) Sketch a graph of this force against position up to position x. b) According to the equation, what is the value of the force at x... 
Physics
PLEASE SHOW ALL WORK A 15.0kg cart is moving with a velocity of 7.10 m/s down a level hallway. A constant force of 5.0 N acts on the cart and its velocity becomes 3.00 m/s. (a) What is the change in kinetic energy of the cart? (b) How much work was done on the cart? (c) How ... 
Math Trig
I have to find the x (bottom length of the triangle) in a right triangle. angle A is 33.9 degrees angle B is 90 degrees and the height of the triangle is 3.3cm What formula do I use to figure out this question? 
trig
Illustrate and solve. A monument near a dock is 12 miles east of a ship. After the ship has sailed 7 miles, the monument bears N62degreesE. In what direction is the ship sailing? 
trig
A space shuttle 200 miles above the earth is orbiting the. Earth once every 6 hours. how far does the shuttle travel in one hour? Note the radius of earth about 4000 miles. 
Precalc+trig
Solve tan(40/90) for the double angle cos(2theta). I know I use the x^2 + y^2 = r^2 formula and cos(2theta) = cos^2theta  sin^2theta. But I don't understand my answer 
trig
A pole is braced with a wire from the top of a pole to the ground. The wire is 100 feet long and makes an angle of 40° with the ground. Find the height of the pole. 
Trig
A 12 foot ladder leans against a building. The top of the ladder leans against the wall 10.5 feet from the ground. What is the angle formed by the ground and the ladder? Assume its a right triangle. 
trig
Find the exact values requested. No decimal approximations. Given that cot θ = 4 for an acute angle θ, A. Find sinθ. B. Find cos(2θ). 
trig and combine function
Suppose f(x)=cos x  sin x and g(x)=cos x + sin x. Explain why the graph of (fxg)(x) is equivalent to the graph of h(x)=cos x after it has been horizontally compressed by a factor of 1/2. Thanks so much... 
Trig
I need help with my vectors unit. I'm really confused about how to set them up. Please help. a.) Given u=2i5j and v=i+3j, determine 6u3v? b.) Find the component form of v if v=4 and the angle it makes with the xaxis is 60 degree. c.) Given u=5i+3j and v+3i+2j, find (u)(... 
Trig
h t t p : / / m a t h c e n t r a l . u r e g i n a . c a / Q Q / d a t a b a s e / Q Q . 0 9 . 9 9 / a n g e l a 2 . 2 . g i f give that picture how do I solve for (h) I know that you you From the diagram tan(3.5) = h/(13 + x) and tan(9) = h/x. Solve the second equation for x... 
MATH Fractions
Taylor baked a cake to serve after dinner. Suppose she cut the cake into 8 equal size pieces and 6 people ate all the pieces. Explain how they could have divided the pieces so that everyone ate the same amount of cake. You make show your work in a drawing. How do you work this... 
algebra(check)
I'm pretty sure these are right but I just want to check. 1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 a.143 b.136 c.140 d.133 answer=b 2)Write an equation for the nth term of the arithmetic sequence 3,3,9,15... a.an=n+6 b.an=6n+9 c.an=6n9 d.an=n3 ... 
PreCalculus
I posted earlier and didn't get an answer so I'm posting againhoping someone could please check these twoI think they're correct Please check my answer: I think it's correct? 1.Find polar form of (3,2) r=sqrt of (3)^2 + 2^2)=sqrt (13) = 3.61 tan^1(2/3) = 33.79 18033.79... 
math
Anna travels to work by car or by bicycle . The probability that she travels by car is 0.35 . If she travels to work by car ,the probability that she will be late is 0.12 .If she travels to work by bicycle,the probability that she will late is 0.25..Work out the probability ... 
PHYSICS
ADDITIONAL INO ADDED AT BOTTOM a spectator at a hockey game is sitting in a seat situated 10.4m above ground leve. if the spectator has a mass of 52.6 kg, calculate her gravitational potential energy relative to: a)ground level Eg=mgh =52.6X9.8X10.4 =5360.99J b)the ice surface... 
Math
A bushel is a unit of volume often used to measure dry, agriculture commodities, and the one bushel is approximately 32L. A 1:50 scale model of a grain bin is capable of holding 0.112 bushels. How many bushels can the fullsize bin hold? Ans: 14 000 bushels ( but you have to ... 
PreCalc/Trig...
Helpp needed, this is sort of confusing me. Describe the nature of the roots for this equation. 2x^2x+1=0 A. Two real, rational roots B. Two real, irrational roots C. One real, double root D. Two complex roots 
Calculus
How would I find the antiderivative of this equation? S 0 to pi/3 (1secxtans)dx This should be one that you should just recognize from your study of trig derivatives. Isn't the derivative of sec x, or (cos x)^1 (cos x)^2(sin x) ?? and isn't that sinx/cosx (1/cosx) ? and ... 
Accounting/math? check my work please
Cullumber Ltd. purchased a delivery truck on January 1, 2018, at a cost of $74,160. The truck is expected to have a residual value of $7,910 at the end of its 4year useful life. Cullumber has a December 31 year end. Use the diminishingbalance method and assume the ... 
chemistry titration (check my thought process)
can someone check my answers here for my lab... so i have 3.234*104 moles of ca2+ and mg2+ ions and used 0.02450L of edta so my molarity of both ions is 0.01320 M. and now we had to find calcium, i used 0.01655 L of edta, can i use the same # of moles (3.234*10^4) to find ... 
Science ~CHECK MY WORK PLEASE~
Both carbon dioxide and water are pure substances. How are they similar to each other? A.) both substances have a set ratio of atoms that cannot be separated by physical means. B.) both substances have a set ratio of atoms that can be separated by physical means. C.) both ... 
physics
1.) A 7159 N piano is to be pushed up a(n) 2.26 m frictionless plank that makes an angle of 25.6 degrees with the horizontal. Calculate the work done in sliding the piano up the plank at a slow constant rate. Answer in units of J. 2.) A 20 g bullet is accelerated in a rifle ... 
spanish
Can someone check my work? Read the school rules listed below. In the the blanks write (P)profesor for realistic rules that were most likely written by teachers for their classrooms. Write (E)estudiante for improbable rules that were most likely submitted by students. P 1.Se ... 
UrgentGeometry(trig part)
So I am new to sine, cosine, and tangent, so I need some help. Just explain it. No need for the answers unless you want to give it to me. :D Let triangle ABC be a right triangle with angleC=90degrees. Given the tangent of one of the complementary angles of the triangle, find ... 
trig
An aifplane is flying on a compass heading (bearing) of 170* at 460 mph. A wind is blowing with the bearing 200* at 80mph. a) Find the component form of the velocity of the airplane. b) Find the actual ground speed and direction of the airplane. 
Trig. application
Dave is going for a ride on his unicycle. The radius of the wheel is 25.5cm. When he gets on, the valve of the wheel is at its maximum height. He pedals along a path at a speed of 30km/h. At what height will the valve be located after he has cycled for 4 minutes? How do I find... 
trig
To guard against a fall, a ladder should make an angle of 75o or less with the ground. What is the maximum height that a 20foot ladder can reach safely to the nearest tenth of a foot? in my diagram I set it up using the sin function since I want to find the height so I did (... 
trig
A planes actual resulting ground speed and direction are 550 mph and N26E. A wind is blowing from the northeast. If the pilot is holding a course of N27E how fast is the wind blowing I'm just stumped. It's an extra credit question is basically why I'm stumped. 
trig
Find the bearing and airspeed for a plane to fly 630 miles due north in 3 hours if the wind is blowing from a direction of 318* and is blowing at 15mph. Approximate the bearing to the nearest degree and the speed to the nearest mile per hour. 
calculus
Find two unit vectors that make an angle of 60° with v = ‹3, 4›. Give your answers correct to three decimal places. I'm not sure what to do here; I believe that I use to definition of a dot product (or maybe cross product) with relation to the trig function (cos for dot, ... 
trig
Match each ratio in the first row with an equivalent ratio from the second row if angle A plus angle B = 90 degrees. SinA CosA TanA CscA SecA CotA SinB CosB TanB CscB SecB CotB Does this question even make sense? 
Spanish
Can someone please check my work? What color and season do you usually associate with.... 1. Valentine's Day? 2. the hot sun? 3. a pumpking? 4. snow? 5. grass? 6. flowers? I don't get how to answer these. Can you please do one as an example? Answer each question with a ...