Trig check my work please?

88,762 results, page 94

trig

I do not understand for my life how to solve this problem. Evaluate the expression without the aid of a calculator. arccos[(-3^1/2)/2) I'm not sure how my teacher did it. I know she said to find which quadrant that cos can be in and graph the triangle to find the angle.

Trig

How do you express sin4x as a trigonometric funcition of x using the identities? I think that you are supposed to start with the sine sum identity and then use the double angle identities for sin2A and cos2A, but after that I get stuck...

trig

An automobile windshield washer 10inches long rotates an angle of 60degrres. If the rubber part of the blade only covers the last 9inches of the wiped, find the area of the windshield cleaned by the wiper.

trig/sig figs

There are 60" in 1', 60' in 1°, and 2π radians in 360°. Convert arc-seconds into radians. KEep 6 significant figures. If someone could help and walk me through this process, it would be soooo appreciated!

trig

A frisbee is thrown within an angular velocity of 360 rpm. If the diameter of the frisbee is 12 inches, how fast does it travel when it hits the ground rolling on the side? round your answer to the nearest mph

Trig

Find all values of theta in the interval 0 <= theta < 360 that satisfy the equation 3cos(2theta)=7cos(theta). Express answers to the nearest ten minutes.

trig

The cross section of a television antenna dish is a parabola. A dish has a receiver that is located at the focus, 4 ft. above the vertex. Find the equation. (which I did) -- x^2 = 8y If the dish is 8 feet wide, how deep is it?

Trig

While fishing on a lake, the fisherman looks up at a cliff. His boat is 23 ft from the base of the cliff, and the angle of elevation is 40 degrees. Find the height of the cliff to the nearest tenth of a foot.

dog behavior

Please check my answer thank you very much For optimal appetitive classical conditioning which of the following is not important. A The dog should be hungry B THe training enviorment should be relatively distraction free C. THe dog should be give the chane to "use the bathsoom...

behavior problems (dogs)

Please check my answer thanks The problem with "quick fix" corrections designed to eliminate one specific behavior is that the A. dog may not respond to the correction. B. dog may be frightened by the correction. C. owner may be unable to utilize the technique at home. D. ...

Social Studies (Check, Please!) (Ms. Sue)

What was the Doolittle Raid and why was it so important? A: The Doolittle Raid was the first air raid on Japan in 1942, during World War II. Among several selected targets was the Japanese capital, Tokyo. This raid was so important because it provided an instant boost to ...

English

Can you check these sentences for me, please? Thank you very much for your help. 1)Big Brother is a TV programme (or a reality show?) about people and relationships. 2) In particular, contestants have to stay in the same house for ten weeks. 3) They have to make their own food...

11th grade mths

Please check urgently .I have to submit the assignment A give an example of a function whose domain equals the set of real numbers and whose range equals the set? the set {-1,0,1} BGive an example of a function whose domain equals (0,1)and whose range equals [0,1] C.Give n ...

Trigonometic

Solving Trigonometic Equations 1)sinx = (4/5) 2) cosx = (-12/13) Solving Trigonometic Equations 1)sinx = (4/5) 2) cosx = (-12/13) What is the question? Solve for x? x= arcsin (4/5) put that in your calculator. Same for the next. For both cases I recognize the sides of well-...

Social studies 8th grade

What was described as the "hardest work" slaves did? A) work in the rice fields B) we're going to tobacco fields ** C) working the lumber business D) Work loading and unloading ships in port 2. Which of the following best describes the social class of the small farmer? A) ...

math

The function f(x)is defined as f(x)={-2x+3: if -2 less than or equal to < 1 f(x)={5: if 1 less than or equal to x less than or equal to 2 f(x)={x^2+2: if x > 2 a. find f(0), f(2) and f(5) b. determine the domain of f(x) Please show work

Trig

Rewrite -25 degrees in radian form. -25 =-25(pi radians/180) =-25pi/180 radians =-5pi/36

Trig

Find the exact value of: sin60-cos60. do I just type sin60-cos60 in my calculator? = .37

trig proof

Help anyone? I need both sides to equal. -2sinxcosx/ 1-sinx-cosx = 1+sinx+cosx

Grade 11 Algebra 2/Trig

Given : f(x) = x^2 and g(x) = 2^x The inverse of g is a function, but the inverse of f is not a function. Explain why the statement is true.

math 30 Trig

A central angle subtends an arc of 35 cm. If the radius of the circle is 12 cm, what is the measure of the central angle?

trig

verify the identity (tanx+cotx) (1) __________ = ______________ (tanx-cotx) (sin^2x-cos^2x)

trig

Find the distance between d(P1,p2) between the points P1 and P2 P1= (-1,-5), P2 = (6, -6) and i also need help with this problem x 8 ____ - ____ x^2-64 64-x^2

Math/Trig

Solve: sin2 x = cos2 x for 0 degrees is less than or equal to x is less than 360 degrees.

trig

Multiply: 5(cos Pi/3 + i sin Pi/3)times 2 (cos Pi/4 + i sin Pi/4) and leave the answer in trigonometric notation.

trig

how high is a tree that casts a 30 ft shadow at the same time a 10 ft pole casts a shadow which is 10 ft long?

trig

what angle in degrees am i if the following is true: sin t > cos t if i were in quadrant three, sin t=cos t

trig

find an expression equivalent to sec theta sin theta cot theta csc theta

trig

Find the reference angle for each given angle: a) 325 degrees b) 14pi/3 c) -190 degrees

trig

City A is 300km due east of city B. City C is 200km on a bearing of 123¤ from city B. How far is it from C to A?

trig

City A is 300km due east of city B. City C is 200km on a bearing of 123¤ from city B. How far is it from C to A?

trig

City A is 300km due east of city B. City C is 200km on a bearing of 123¤ from city B. How far is it from C to A?

Trig

If you are dealt 3 cards from a shuffled deck of 52 cards, find the probability that all 3 cards are picture cards.

trig

GIVEN THE ANGEL ALFA WITH COS ALFA = -1/a. IF ALFA IN QUADRANT TWO, THE VALUE OF SIN ALFA IS....

trig

City A is 300kilometer due east of city B. city C is 200kilometer on a bearing of 123degree from city B.how far is it from C to A

Trig

Given ∆ABC. If side a is twice as long as side b, is <A necessarily twice as large as <B? Why?

Trig

What is the total number of solutions for the equation 3 tan^2 A + tan A – 2 = 0 in the interval. 0 ≤ A ≤ π?

trig

a plane is 50000 ft in the air and 30000 ft from an airport find the angle of depression from the plane to the airport

Pre-Calc/Trig...

Am i correct? The graph of y=3x^2-4x+2 opens downwards. FALSE The graph of y=2x^2-4x+2 has a y-intercept of (0,1). FALSE

Trig

A pendulum swinging through a central angle of Ts completes an arc of length 6.4 cm. What is the length of the pendulum?

trig

solve log(x +9) - log x=3

trig

sec(sq) X - Sec(sq) X * Sin (sq) X = 1

trig

simplify cos(30+x)+cos(30-x)

Trig

cot (tan + cot) = ?

Trig

Solve Log[8](log[5]x)=0

trig

sin [sin -1 (7/25) - cos -1 (-8/17)]

trig

tan^2x/1 + tan^2x = sin ^2 x

trig

cot^2/1 + cot^2 = cos^2

Trig/precalc

Cos[x + (7 Pi)/4] + Cos[x - (7 Pi)/4] = 1

Trig

cos[(tan^-1(3/4))+(cos^-1(9/41))]

Trig

Tan^2= csc^2 tan^2 -1

Physics

A satellite has an orbit with pedigree 175 km and apogee 181,200 km. What is the period of the orbit? >>I'm not sure what the associated equation is. I tried the problem using the average radius in the period equation but it didn't work. Please help!

Math

Describes a real world situation using words as label and using math symbols to relate the words.. Its a vocab work. And the school couldn't get me a text book today because my names not in the system. PLEASE help me:((

Grammar (will you check the rest please)

FIND THE ADVERBS 1. Pedro enthusiastically supported Zach's bid for student council president. ENTHUSIASTICALLY 2. Spend your money wisely. WISELY 3. Marissa waited quietly for the play to begin. QUIETLY 4. Lightly underline the words you want to emphasize. LIGHTLY 5. Now I ...

math(check answers please)

for questions 1-3,find the sum. 1.5 9/13 + 5 9/13= A.13/74 B.10 12/13 C.11 5/13(I PICKED THIS) D.13/142 --------------------------- 2.3 3/15 +4 2/5= A.2 1/2 B.22 4/5 C.7 3/5( I PICKED THIS) D.5/38 -------------------------- 3.3 4/9 + 2 1/3= A.5 1/3 B.18 3/5 C.5 7/9(I PICKED ...

math

Each user has a password 6 characters long where each character is an uppercase letter, a lowercase letter, or a digit. Each password must contain at least one digit. How long will it take to check every possible character combination, if each check takes one unit of time.

PLEASE HELP CHECK ANSWER SCIENCE

5. Which of the following body systems does not rely on the autonomic nervous system to stimulate involuntary events? A. skeletal system B. digestive system C. circulatory system D. respiratory system My Answer skeletal systems

English

Please check my answer thanks :) IN which of the following sentences is the word run used as an action verb? 1. MArk competed in the five-mile run. 2. Sandy had a runny nose and a cough. 3. Adam runs every day at five o'clock. 4. Erica put Molly in the dog run before she went ...

physics

please check: Conductors can be charged by ___, while insulators cannot. a. grounding b. induction c. polarization d. contact D Which of the following is not true for both gravitational and electric forces? a. the inverse square distance law applies b. forces are proportional ...

English

Can you check the following sentences please? Can you say "This is your Christmas holiday homework". •Read and do the “test yourself” activity on the Plantagentes pag. 38-39 •Read and translate the opening of Chaucer’s Canterbury Tales pp. 46-47 •Read and summarize...

English-Writing

Many students fear the thought of college. It is not only the transition from high school that intimidates them, but large classrooms, two hour seminars, and worse part, the fear of failure is what keeps them from going. Hence either take shorter hours, gap years, or some even...

7th grade math (probability)

Can you check these, please? Ten cards numbered 1 through 10 are mixed together and then one card is drawn. Find the probability of each event. Write each answer as a fraction, percent, and decimal. 14. P(less than 5) = 4/10 = 2/5 Ans: 2/5, 40%, 0.4 15. P(greater than 3) = 7/...

Chemistry revision

all these questions I got wrong on my homework today ...I'm trying to find out why and what the correct answers were .. please help How many grams of solute are required to make a 504 mL solution of copper (I) nitrate with a concentration of 1.3317 M? before I had help and was...

S.S.

Have any info on colonial voting what is qualla boundary men only! no women. Please check these sites: (Broken Link Removed) http://en.wikipedia.org/wiki/Qualla_Boundary

Dr.Bob - about your post to a previous question

For that question by Josh on the second page I reviewed what you did and am confused to how you found the g excess reagent (NH3) I posted a response to what I found when I helped Josh with the problem. Could you please take a look at it and check my thinking on the problem ...

English

Let's look at the two comparative sentences. When we compare the degrees of two things and people, we use comparative forms. 1. Emily is younger than Bob. 2. Bob is shorter than Emily. (Will you check all the sentences above? Correct errors, please. What is the part of speech ...

health

True or false the endocrine system only regulates long-term changes in the body True*** False Which endocrine glad(s) are responsible for the changes associated with puberty? A. thymus gland B. reproductive glands*** C. thyroid gland D. pancreas Please check

Science - 1 Question

A small fish in the pacific ocean watches a shark swim by a large rock a few meters away. Which of the following is a reference point in this scenario? A. shark ** B. large rock C. water D. pacific ocean I think the answer is A, please check!

Physical Science

A small fish in the pacific ocean watches a shark swim by a large rock a few meters away. Which of the following is a reference point in this scenario? A. shark ** B. large rock C. water D. pacific ocean I think the answer is A, please check!

Science - 1 Question

A small fish in the pacific ocean watches a shark swim by a large rock a few meters away. Which of the following is a reference point in this scenario? A. shark ** B. large rock C. water D. pacific ocean I think the answer is A, please check!

Science Check

Hi! Can someone check my answers? Thanks!! :) Question 1: A skateboarder (coasting with a constant velocity) jumps straight up. What happens she she lands? Does she come down.... A.) behind the skateboard B.) ahead of the skateboard C.) on the skateboard My answer: B. Question...

Heeeeeeeelp

Read the following instructions in order to complete this assignment and review the example of how to complete the math required for this assignment: Use the properties of real numbers to simplify the following expressions: 2a(a – 5) + 4(a – 5) 2w – 3 + 3(w – 4) – 5(...

physics

Starting at rest at the edge of a swimming pool, a 72.0 kg athlete swims along the surface of the water and reaches a speed of 1.10 m/s by doing the work Wnc1 = +165 J. Find the nonconservative work, Wnc2 done by the water on the athlete. Thanx in advance.

physics

if the system is a basket, the basket is tied to a rope and it is stopped by a fixed clamp when it is falling down, I know there is initial KE but how come initial work is negative. Isnt force and displacement are in the same direction, so work should be positive?

physics

2 questions to fill in the blank: 1) in order tocalculate work done, use the ___ of the force which is in the direction of motion. 2) You push against a car stuck in the mud. You will do ___ work unless you are successful in moving the car.

physics

2 questions to fill in the blank: 1) in order tocalculate work done, use the ___ of the force which is in the direction of motion. 2) You push against a car stuck in the mud. You will do ___ work unless you are successful in moving the car.

physics

2 questions to fill in the blank: 1) in order tocalculate work done, use the ___ of the force which is in the direction of motion. 2) You push against a car stuck in the mud. You will do ___ work unless you are successful in moving the car.

physics

A 140 kg sleigh is pulled by one horse at a constant velocity for a distance of 0.90 km on a level snowy surface. The coefficient of kinetic friction between the sleigh runners and the snow is 0.25. what is the work done by force? what is work done by friction?

physics

A block and tackle system of 5 pulleys is used to raise a load of 50kg through a height of 20m the work done against friction is 200J.Calculate the work done by effort,the efficiency of the system and the effort applied.

AP Physics 1

How much work is required to compress a spring, k = 33.3 N/m, from its equilibrium point at x = 0.0 m to x = 5.0 m? I am not sure how to approach a problem like this - what equation do I use? I know work = Force * Distance, but these aren't exactly terms I would use to ...

French

Please check if this is right: Demain matin, je vais aller à la ferme. Je n’ai jamais visité une ferme avant. D’abord, je vais faire une randonnée à pied. Ensuite, je vais voir: un cochon, un lapin, un cheval, une vache, un ècureuil, et un oiseau, Je vais aller à la ...

English

Can you please check these sentences, please? Thank you very much! 1) She told me that it was the second time since she hadn't been to the cinema. 2) She asked me how long I had been waiting for her. I think you should try to convince his parents that Bill is a trustworthy and...

Algebra

Please help! |x+1|-3 > 8 Solve the absolute value inequalities. Please, please , PLEASE! and thanks.

Spanish-Please check my answer

Did I answer the question correctly? ¿Qué haces cuando hay un examen grande? Yo estudio cuando hay un examen grande Thank you

Spanish: Please Help (CHECK ANSWERS)

19. Your hermano mayor is A.) younger than you. B.) older than you. *C.) more powerful than you. D.) smarter than you. 20. Your hermana menor is *A.) younger than you. B.) older than you. C.) more powerful than you. D.) smarter than you. Thank You

math

10 men can do a piece of work in 10 days.how many days can 100 men take to do the same amount of work?

English

Success comes from hard work. (I will say “NO” to the statement above) Success comes from smart work.

Math

Susan was awake for 2/3 of an entire day. If she spent 3/7 of her time awake at work, what fraction of the day was she at work?

Math

3. A can do a piece of work in 6 days. B is 50% more efficient. The number of days it take B to do work is A. 9 B. 3 C. 2 D. 4 Is the answer 4? If so, how did you get your answer?

physics

!.How does work affect power with time constant? 2.how does the weight of the stair-climber affect work and power?

Precalculus Trig (Geometry)

A rectangular doorway is 38 meters wide and 60 meters high. The doorway is capped with a semi-ellipse that is 13 meters high at its center. Find the height h of the doorway and window 5 meters from the center. From the ellipse equation, I can see that a should be 19 and b ...

physics

A horizontal force of magnitude F = 110 N is used to push a box of mass m = 6 kg from rest a distance d = 16 m up a frictionless incline with a slope q = 28°. a) How much work is done by the force on the box? b) How much work is done on the box by the gravitational force ...

dog behavior

please check my answer thanks Latent learning becomes evident when A. a puppy grows up B. the animal is motivated to perform C a dog has failed with the trial-and-error method D. a dog experiences social facilitation I picked A because latent learning occurs in the absence of ...

math

Someone please check my answers 1.In the number 854,263,189 what number tells the number of millions. 4 2.Write 4x4x4x4x4 as a power of 4 4^5 3.write 684 in expanded form 600+80+4 4.Turner agrees to buy a boat for $2,800 down and $129 a month for 48 months. What is the total ...

Assistance Dogs

Please check my answer thanks :) 10. Guide dogs are usually at least medium-sized because they A. need to be able to reach up to counters and table tops. B. are required to pull wheelchairs during training. C. need to be able to see above obstacles. D. need to be strong enough...

English

I urgently need to include the following details in a letter. Ms. Sue, could you please check them? 1) As I'm planning all the details for our preliminary meeting I urgently need to know when you are arriving here and if you need any help to arrange your transfer from the ...

Introduction to Graphic Design

Hello! Thanks for checking my question out! ____ Image URL: goo.gl/3v95A5 Use the image to answer the question. 3. Under which of the following categories does the artwork fall? (1 point) a) abstract painting b) portrait c) still life d) monoprint My Answer: A Could someone ...

Statistics

Let's pretend the Work variable is normally distributed, with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 68 percent of SOC 390 students work between ______ and ______ hours per week.

Physics

I need help with these two. 1. A horizontal force pulls a 20-kg box across the floor with constant speed. μs is 0.60, how much work does F do in moving the cart 3.0 m? 2. A 400 lb load of bricks is to be lifted to the top of a scaffold 30 feet high. How much work to lift it?

Biology

I need to find a way to measure protein concentration. It's for part of my infection and immunity lab report. We've done about radial immunodiffusion calculating the concentration of bovine serum albumin in unknown samples, and the last question is: What other techniques could...

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