# Trig check my work please?

88,487 results, page 93

### Trig

suppose that the angle theta is in the second quadrant, and that sin(theta)=1/3. Find exact values for cos (theta) and csc (theta)

### Math - Trig

if the diameter of a tire is 3.5 m and makes one rotation every 5 seconds, how far does the tire rotates in one minute?

### trig

If a ship leaves port at 9:00 a.m. and sails due north for 3 hours at 12 knots, then turns N 30° E for another hour, how far from port is the ship?

### Linux

you will design and implement a script that operates an ATM machine. Your script should be able to let users withdrawn money from their checkings or savings account, transfer money between accounts, and check the accounts' balances. Your sscript should also identify the user ...

### trig

sin2 theta = cos theta, 90 degrees less than or equal to thetha greater than 180 degrees

### trig

if theta is an angle in standard position and B(-3,4) is a point on the terminal side of the angle, what is the value of sin theta?

### trig

Find a numerical value of one trigonometric function of x if secxcotx=4 A.cscx=1/4 b.secx=4 c.secx=1/4 d.cscx=4

### trig

how do you find all the values of theta from 0 degrees through 360 degrees for which sin theta equals 0

### trig

Solve the equation 2 tan C - 3 = 3 tan C-4 algebraically for all values of C in the interval 0 degrees <_ C < 360 degrees

### trig

right triangle has an acute angle of 24.8 and an adjacent length of 145 what is the side opposite of the acute angle

### trig

what is the exact value of cos(x+y) if tan=x sqare root 3 over 3 and sin y=square root 2 over 2?

### trig

How do I prove : 4sinAcosAcos2Asin15 all over. :sin2A(tan225-2sinsquared A)is equal to. :root 6 - root 2 over 2

### trig

AB = 8 cm, AC = 6 cm, AD = 7 cm, CD = 2.82 and CAB=50° (a) the length BC (b) The size of angle ABC; (c) The size of angle CAD (d) The area of triangle ACD

### trig

A 15 FOOT LADDER MAKES 52 DEGREES ANGLE WITH THE GROUND.HOW FAR WILL THE TOP OF THE LADDER BE ABOVE THE GROUND?

### Trig

Give: a=alpha B=beta csc a= 2 pi/2<a<pi secB=-3 pi/2<B<pi 1)find sin(a+B) 2)find tan(a-B) 3)cos B/2 4)sin a/2

### trig

Given csc theta= 4, cot theta < 0 Find the exact values of cos theta and tan theta

### Trig

The number of values in the interval –π ≤ x ≤ π that satisfy the equation sin x = 2 cos x is 1 2 3 4 0

### trig

Angle θ lies in the second quadrant, and sin θ = 3/5. Find cos θ and tan θ.

### trig

in triangle QRS, q=10.2m, r=20.5m, s12.8m..Solvetriangle QRS by determining the measurements of each degree to the nearest tenth of a degree

### 6 th grade SS

Can you check my answer What do you think the political and economic future of Cyprus will be like? The future of Cyprus will be a future governed by a new and different governmental and political structure. Like focusing on the economy instead of the politicial problems on ...

### math urgent please

Petr has a cylindrical block of wood od diameter 6 cm and height 18 cm. He glues the base to a board, but wants to paint the rest of the block. He wants to paint the bottom half of the wood black and the top half white. a) Calculate the surface area of the block that Peter ...

### French 1

I am trying this again. Incomplete french say that the people do not the activities given. Here is what I did please check for me Thanks much 1 Julie/voyager Julie ne voyager pas 2. elles/etudier Elles ne pas etudier 3. il/habiter a Paris Il ne pas habiter a Paris 4. nous/...

### trigonometry, check my answer please?

A 15 ft. ladder is leaning against the side of a house and forms an angle of 66o with the ground. To the nearest foot how far from the base house is the foot of the ladder? I set it up cos66=15/x 15/cos66 =36.878, rounding to the nearest ft makes it 37

### Organic Chemistry

When reading an infrared (IR) spectrum for an unknown compound, you check for certain functional groups in a certain order. If C=O is absent, you check for alcohols/phenols (-OH), then for amines (N-H), then for ethers (C-O, & the absence of -OH). So, I was wondering: If you ...

### chemistry(check my work)

Which of the following is NOT true of colligative properties? Colligative properties are... A. dependent on the mass of solute present. B. independent of the chemical identity of the solute. C. dependent on the molar mass of the solute. D. responsible for lowering the vapor ...

### Science last question

Which of the following boxes would have the strongest gravitational pull on a third object positioned at an equal distance from both boxes? Box A: 100 g Box B: 10,000 g A. box b because it has more mass B. box a because it has less mass C. box a because it is bigger*** D. box ...

### math

Just want to double check please... Susie has two children, Mary and Jake. Given that Susie has Alzheimer’s and there’s a 25% chance that she passed the Alzheimer’s gene onto her offspring, what is the probability of BOTH Mary and Jake developing Alzheimer’s, based on ...

### Math

Suppose that the function represents the percentage of inbound e-mail in the U.S. that is considered spam, where x is the number of years after 2002. Use this model to approximate the percentage of spam in the year 2006 to the nearest tenth of a percent. Please show work.. ...

### U.S.History

Many immigrants who came to the United States expected to find streets paved with gold and easy opportunities to make their fortunes. can someone please give me a brief description of what they were more likely to find..and i will work on my essay from that description thanks ...

### Algebra 2 URGENT

Solve the problem. Round answer to the nearest hundredth. Please Show All Work! Suppose a pool has dimensions 12 ft. by 30 ft. A sidewalk of uniform width around the pool has an area of 200 square feet. What is the width of the walkway?

### General Chemistry

The work done when a gas is compressed in a cylinder like that shown in Figure 6.5 is 351 J. During this process, there is a heat transfer of 269 J from the gas to the surroundings. Calculate the energy change for this process. Not sure how to do this please explain with ...

### trigonometry

Using exact values,find the value of: (A=30degrees) sin 2A + tan 3A/2 - cos A + sec(A+15), when A= 30degrees There were no parentheses and no exponents. please help by showing the work in details. Thank you! I pluged in the numbers and got this I don't know if its right or ...

### Math

Hi I wanted some help with this question, I don't want the answer though as I want to try to see where my workings are going wrong. 3 x 34 / 9 - 2 (10 - 6) - 4 / 2 A -13 B 5 C 6 D -14 But I'm getting -3. Here's how I work through the equation using PEMDAS as a guide to order: ...

### Physics

A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the man is initially 2.75 m above the level of the saddle. Please Show work!! I am completely lost!

### Physics

A concave mirror is constructed so that a man at a distance of 19 cm from the mirror sees his image magnified 2.0 times. What is the radius of the curvature? OK so I have tried to work this out and can't seem to find the answer. Here is what I got. Please let me know if you ...

### Chemisty

A student following the procedure described in this experiment collected the following data: Mass Mg,g 0.0243 volume of gas mL 25.5 barometric pressure, mm Hg 298 Calculate the value of the gas law constant, R. Please help me work this out, I have no idea. Thank you!

### Algebra II

Find (f+g)(x),(f-g)(x),(f*g)(x), and (f/g)(x) for each f(x) and g(x) Now we were working well on this until we got to this f(x) and g(x). This was something our teacher didn't bring up. f(x) = 8x^2 g(x) = 1/x^2 How would you go about solving the problem with the fraction as g(...

### Literature

PART A: What is Asimov's main idea in this essay? (Science an the sense of wonder) A- space is best appreciated through poetry B- poetry and science can work together****** C- the universe is more than beauty D- scientific knowledge is always advancing Help please!

### how children learn(someone please check)

What do constructivist educators believe about the learning process? A. Learning is a response to a stimulus. B. Learning is centered on the student and the student’s motivation. C. Learning is a process of building on what the student already knows. D. Learning is the ...

### maths

Starting with x0 = 0 (x0 has diagonal 0 that is smaller and towards the bottom) use the iteration formuala xn+1 = 4/ xn^2 +5 twice (for xn+1 the n+1 is smaller than x and diagonal towards the bottom also for xn^2 the n^2 is smaller than the x and diagonal towards the bottom of...

### Early Child Ed.

Can you please check these to make sure my answers are correct? 1. An educator who uses stereotype-free learning materials qnd activities that allow both boys and girls to participate in the same physical play is promoting: 1. insensitivity to cultural differences 2. a biased ...

### chemistry 2

for the reaction 2C2H2(g)=>C6H6(l) at 25 C, the standard enthalpy change is -631 kJ and the standard entropy change is -430 J/K. calculate the standard free energy change at 25 C. show all work Help please!

### chemistry 2

for the reaction 2C2H2(g)=>C6H6(l) at 25 C, the standard enthalpy change is -631 kJ and the standard entropy change is -430 J/K. calculate the standard free energy change at 25 C. show all work Help please!

### Physic

The tension on a wire is 2640 N. The wire is 2.6 m long and the fundamental frequency is 330 Hz. What is the mass of the wire? (Answer: 2.33g) Answer is provided above. Please show all work on how to get the answer. Thank you!

### Physics

A 1.45 kg book is sliding along a rough horizontal surface. At point A it is moving at 3.25 m/s , and at point B it has slowed to 1.34 m/s . Part A How much work was done on the book between A and B? Part B If -0.750 J of work is done on the book from B to C, how fast is it ...

### chemistry

Calculate the hydronium ion consentration and the hydroxide concentration in blood in which the PH is 7.3. Hydronium = [H3O+] = 10-pH or [H3O+] = antilog (- pH) and I got 1.00 x 10^7.3 for both concentrations is this correct? ABsolutely silly. You did not do the math. PUt this...

### English

Could you please help me describe the pictures I posted you and check these sentences. 1) Go and fetch some chalk, will you? Open the window halfway to let some fresh air in. 2) You should hand in your dissertation by next Monday. Wipe off the blackboard. 3) If you enter the ...

### English

Can someone check these questions, please? Thank you in advance In Shelley's Frankenstein, what are the traits that remind us of a Gothic novel? 2)Discuss the concepts of beauty and youth as portrayed by Lord Henry in chapter 2 of O. Wilde's The Picture of Dorian Gray. 3) ...

### History Check Please!

2. Why were interstate highways initially built? A. to accommodate the increasing number of automobiles B. to make it easier for U.S. citizens to travel from state to state C. to enable the quick movement of troops in case of a nuclear attack D. to allow for faster speeds so ...

### Trig

Find the amplitude, if it exists, and the period of: y=tan1/4x. no amplitude I got confused, is the period 4pi? And is that the same as saying 360 degrees?

### trig

y = sin(-3x + 3) Amplitude = Period = Two x- intercepts = y - intercept = Domain = Range = Shift along x = Shift along y = Kind of reflection =

### trig

Solve the triginometric equation analytically. Use values of x for 0 less then or equal to x less then 2pi The equation for this question is sin2x + cos2x = 0

### Alge2/trig

Should the triangle be solved beginning with Laws of Sines or Laws of Cosines. Then solve the triangle and round to the nearest tenth. a=16, b=13, c=10

### trig

ok I'm trying to solve for an angle knowing adjacent and opposite of a triangle so I do tangent by definition tan theta = a^-1 o how do I algebraically solve for theta

### Trig

How would I do this problem? Verify that each equation is an identity. cos^2x+tan^2xcos^2x=1 the ^2 is just saying squared. ex.- cos^2x is cosine squared x

### Trig

Find three additional polar representation of the point (-3, pie over 6) given in polar coordinates,using -2 pie <0 <2pie.

### Trig

assume a pulley has a radius of 12.96 cm. If it takes 18 seconds for 56 cm of belt to go around the pulley, find the angular velocity in radians per seconds

### Trig

a student says there can only be 360 different rays emanating from a point since there are only 360 degrees in a circle. Is this true? Why or Why not?

### Trig

find the exact value of the expression using the provided information. Find Tan (S+T) given that cos s=1/3 with s in quad I and sin T= -1/2 with T in quad IV

### Trig

find the exact value of the expression using the provided information. Find Tan (S+T) given that cos s=1/3 with s in quad I and sin T= -1/2 with T in quad IV

### trig

y = 3sec3x Amplitude =_________ Period = __________ Shift along x = ____________ Shift along y = _____________ Kind of reflection = ______________

### trig identities

cos94 degrees cos18 degrees+ sin94 degrees sin18 degrees. write the expression as the sine, cosine, or tangent of an angle.

### Trigonometry

Help trig question involving discriminant? a)Find the value of the discriminant. b)Use any method to find the real roots of the equation if they exist. 2x^2+7x=0

### trig

if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)

### Geometry/trig

A ladder, 17 feet long, leans against a wall at a 49 degree angle to the ground. How far up the wall does the ladder reach?

### trig

write y=sinx-cosx in the form y=ksin (x+a), where the measure of a is in radians. answers: sqrt2sin (x+3pi/4), sqrt2sin (x+5pi/4), sqrt2sin (x+pi/4), or sqrt2sin (x+7pi/4) ...?

### Algebra 2/Trig

A 5'6" person is standing near a light post that is 18' above the ground. How long is the man's shadow when he is 5' from the base of the light post?

### TRIG

Triangle FGH has vertices F(0, 10), G(10, 0), and HR(1, -1). After rotating triangle FGH counterclockwise about the origin 75º, the coordinates of G' to the nearest hundredth are (2.59, ?).

### Trig

A plane if flying at 200 mph with a heading of 45 degrees and encounters a wind of 100 mph from the west. What is the resulting velocity and heading?

### trig

Find the indicated roots. Write the answer in trigonometric form. Fourth roots of 256(cos 220° + i sin 220°)

### trig

how do you find algebraically the measure of the obtuse angle, to the nearest degree, that satisfies the equation 3 sec theta = 5 is it sec theta = 5/3 and then cos -1 (5/8) = 0.4

### Math Trig

Let theta be an angle in quad III such that sec theta = -13/5. Find the exact values of cot theta and sin theta? Thank you!!!

### algebra

please could you check my answers and fix them if needed? label each statement true or false . if false correct the underlined portion A. if 3 < x then this underlined 3 + y<x+y i put true B. if this underlined |w-7|< -3 then w - 7 > -3 or w - 7 < 3 I put true ...

### 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...

### 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 ...

### Trig

Find the exact value of: cos315. I have to use the sum angle formula cos(270+45) cos270 cos45 - sin270 sin45 thats all I have. Is the answer at least sqrt 2/2?

### 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

### 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 ...

### 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) ...

### 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.

### 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

### 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-...

### 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

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.

### 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 ...

### 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.