# Trigonometry

**Pre-Cal**

given the function y=2sin3x-1, identify the following below. also show its graph for the primary cycle. (identifying parts of a trig. equation) asymptotes= k= c= axis= primary cycle= period=

**ALG/TRIG**

I cannot seem to get the right answer. Animal Pulse Rate According to one model, an animal’s heart rate varies according to its weight. The formula N(w)=885w^-1/2 gives an estimate for the average number N of beats per minute for an animal that weighs w pounds. Use the ...

**ALG/TRIG**

Lost is an understatement..please help me understand this. Orbits and Distance Johannes Kepler (1571–1630)discovered a relationship between a planet’s distance D from the sun and the time T it takes to orbit the sun. This formula is , where T is in Earth years and ...

**Trig**

Please help. I can't get this problem at all. When two bubbles cling together in midair their common surface is part of a sphere whose center D lies on the line passing through the centers of the bubble. Also, angles ACB and ACD are 60 degrees. Show that the radius r of the ...

**Trig**

Prove sin(α+β)sin(α-β)=cos^2β-cos^2α

**Trig**

A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?

**Trig**

Prove cos^2t+4cost+4/cost+2=2sect+1/sect

**Trig**

Prove (3cosθ-4sinθ)^2+(4cosθ+3sinθ)^2=25

**Trig**

Prove sin(α+β)sin(α-β)=cos^2β-cos^2α

**Trig**

A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?

**Trig**

Prove cos^2t+4cost+4/cost+2=2sect+1/sect

**trig**

Q1: Prove cos^2t+4cost+4/cost+2=2sect+1/sect Q2: A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?

**Trig**

Prove cos^2t+4cost+4/cost+2=2sect+1/sect

**Trig**

A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?

**Trig**

prove sin(α+β)sin(α-β)=cos^2β-cos^2α

**geom/trig**

A 40 ft ladder leans against a wall so the base of the ladder is 11 feet away from the base of the wall . What angle does the ladder make with the wall?

**Trig**

A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?

**Trig**

prove sin(α+β)sin(α-β)=cos^2β-cos^2α please help... this is the only one I didn't understand out of all my homework...

**Trig**

prove sin(α+β)sin(α-β)=cos^2β-cos^2α

**trig**

if sin 7x = cos x+10 find the value of x

**trig**

find the general solutions to the equations: 1) sec x = -2 2) 2 sin^2 x = 1 3) cos^2 x - 2cos x + 1 = 0

**trig**

if cot(x-10)=tan(4x) what does x equal?

**trig**

Verify the trigonometric identity. Please show all steps. tanx-cotx/tanx+cotx=sin^2x-cos^2x

**Trig**

(cos^2t+4cos^2+4)/(cost+2)=(2sect+1)/sect

**Trig**

Prove (cos^2t+4cos^2+4)/(cost+2)=2sect+1)/sect

**Trig**

prove(sinx/cosx+1)+(cosx-1/sinx)=0 Please help asap!!!!! PLEASE

**Trig**

prove (cscx-secx/cscx+secx)=(cotx-1/cotx+1)

**Trig**

prove(sinx/cosx+1)+(cosx-1/sinx)=0

**trig**

y=25sin(120t-4x) what is the wave length what is the speed

**trig and geometry**

bernhardt and julia are observing an eagles nest in a tree. Julia is 75m from the tree, and sees it at an angle of elevation of 42 degrees A)How high up the tree is the nest B)Bernhardt is standing 30m behind julia. At what angle of elevation does he see the nest?

**trig**

Which expression is equivalent to cos(4x) + cos(2x)?

**trig**

bernhardt and julia are observing an eagles nest in a tree. Julia is 75m from the tree, and sees it at an angle of elevation of 42 degrees A)How high up the tree is the nest B)Bernhardt is standing 30m behind julia. At what angle of elevation does he see the nest?

**Trig FInd Translation Rule and Coordinates Thanks!**

The vertices of a rectangle are R(–5, –5), S(–1, –5), T(–1, 1), and U(–5, 1). After translation, R' is the point (–11, –11). Find the translation rule and coordinates of U'. (x, y)--> (x – 6, y + 6); (–11, 7) (x, y)--> (x – 6, y – 6); (–11, –5...

**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**

Find the value of theta (in radians) corresponding to the point (6,-8)

**Trig**

When two bubbles cling together in midair their common surface is part of a sphere whose center D lies on the line passing through the centers of the bubble. Also, angles ACB and ACD are 60 degrees. Show that the radius r of the common face is given by r=ab/a-b.

**trig**

8cos6xsin6x

**trig**

Expan each of the following using the compound-angle formulae:sin(x + 20degree)

**Trig**

Use a calculator to find θ to the nearest tenth of a degree, if 0° < θ < 360° and csc(θ)=1.4307 with θ in QII θ=?

**trig**

in this right trianlge ABC, m<c=90, m<a=63, and AB=10. if BC is represented by a, then which equation can be used to find a?

**trig**

solve for x log4 64+ log2 2 ________________ =x log3 81

**math/cal/trig solve for t**

solve for t: 0=4sin(2t)cos(2t)-sin(2t)

**trig**

Tan(cos inverse 5x)

**trig**

Choose the percent increase or decrease for the before and after measurements: 12 (before) and 12 (after) a) not given b) increase of 30% c) decrease of 25% d) increase of 25%

**trig**

Name three values of theta that would result in y equal to cot times theta being undefined.

**tRiG/ AlGeBrA**

1) Use double-angle identities to write the following expression, using trigonometric functions of x instead of 4x. cos 4x 2) Use half-angle identities to write the following expression, using trigonometric functions of x instead of x/4. sin x/4

**Math/Trig**

Period: Asymptotes: Range: a) y= 2 sec (x) + 1 b) y= -2 csc (x - pi/2) c) y= 1 + tan (x + pi/4) d) y= 1/2 + csc (x - pi) + 1 e) y= cot (3x + pi) + 2 Any tips on drawing the graph?

**trig**

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

**trig**

Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trigonometric functions of t whenever possible. 2pi 3pi/4 5pi/6 Three questions. I think those are supposed to be t.

**geometry**

In parallelogram TRIG, m∠R = 2x + 19 and m∠G = 4x - 17. What is m∠T

**trig**

Solve for x if sin2x=cos(x+60 and x€ [-90,180].show all work details

**trig**

If csc theta = 2, then what is theta approximated to 4 decimal points? RADIANS

**trig**

1.Ifg(x)=cos4x,find g'(pie/24). 2.Differentiate y=csc^2 pie*x

**college Calculus Help!**

Find the derivative of the function. 1. F(x)= (1+2x+x^3)^1/4 2. f(t)= (1+tant)^1/3 ---> i hate trig. 3. y=4sec5x 4. y=xsin√x

**college Calculus Help!**

Find the derivative of the function. 1. F(x)= (1+2x+x^3)^1/4 2. f(t)= (1+tant)^1/3 ---> i hate trig. 3. y=4sec5x 4. y=xsin√x

**Precal**

Write down 3 other possible trig forms for - 1 + isqrt2. How do you solve this?

**TRIG/ALGEBRA**

1) Find the exact value. Use a sum or difference identity. tan (-15 degrees) 2) Rewrite the following expression as a trigonometric function of a single angle measure. cos 3x cos 4x - sin 3x sine 4x

**Pre- Calculus**

Evaluate the trig function tan33degress

**trig**

does sec(x)tan(x)*tan(x)=[sec(x)(tan^2)x]

**trig**

sin(x) = 8/17 and 90 degrees < x < 180 degrees then find cos2(x)

**Trig (Last URGENT)**

sin2x+cosx=0 , [-180,180) = 2sinxcosx+cosx=0 = cosx(2sinx+1)=0 cosx=0 x1=cos^-1(0) x1=90 x2=360-90 x2=270 270 doesn't fit in [-180,180) what do I do? Or maybe I did something wrong. sinx=1/2 x1=sin^-1(1/2) x1=30 x2=180-30 x2=150 is this correct? Please and Thank you

**Trig Help (URGENT)**

Solve over the indicated interval: 2sin^2x=sqrt2sinx , [-180,180) don't how to get x by itself please help and thank you

**Trig Help**

Given that cos2x=7/12 and "270 equal or < 2x equal or < 360", find sinx. Please help and Thank you

**trig**

please help me with some questions I skipped on a review for our test coming up? solve 5-7 on the interval 0 greater than or equal to x less than or equal to 2pi. 5. sin x=sqrt3/2 6. cos x=-1/2 7. tan x=0 ---------------- 14. what is the exact value of tan[arcsin(.43...

**trig**

John weighed five rocks two at a time in all possible ways. The weights in pound are 30,38,41,42,45,46,50,53,58,61. How much does each rock weigh?

**trig**

How king i find theta if the formula is cot(2theta) = 7/24?

**trig**

The angle of elevation to the top of a very tall Building is found to be 9° from the ground at a distance of 1 mi from the base of the building. Using this information, find the height of the building.

**trig**

The angle of elevation to the top of a very tall Building is found to be 9° from the ground at a distance of 1 mi from the base of the building. Using this information, find the height of the building.

**Trig**

#1 (1/sinx)(sin^2x + cos^2x(sinx/cosx) )/(sinx + cosx) = (sinx + cosx)/(sinx+cosx) = 1 Reiny helped with this question but I don't how Reiny did it. Please explain

**Trig**

3-square root 2/ 1+square root 2

**precalc/trig help please**

The area of a circle is 18pi square meters. What is the radius (leaving answer in simplest radical form)

**trig**

Since cot x = cos x / sin x, if cot x = 1/2, with the angle x in the first quadrant, then cos x = 1 and sin x = 2 (1) State true or false. Is this a possible situation? (2) If false, explain why.

**trig**

The minute hand of a clock is 6 inches long. What distance does its tip move in 16 minutes?

**trig**

evaluate tan(51 degree 15')+cot(25 degrees 18')

**trig**

y= sin x/2, 0 less than equal to x less than equal to 4pi... the question says state the amplitude and period for each equation and graph it over the indicated interval

**trig**

53. A 60-foot drawbridge is 24 feet above water level when closed. When opened the bridge makes an angle of 33 degrees with the horizontal. a. How high is the tip P of the open bridge above the water? b. When the bridge is open, what is distance from P to Q? 53. A 60-foot ...

**trig**

how to graph y = 1/2 cos 2x for 0 ≤ x ≤ 2 p

**Trig**

what is the amplitude, period, phase shift, and vertical shift of each equation? 1. y= A cos(B(x-3))+4 2. y=-2sin(2piX/3) 3. y=4cos(3pi(x+3)) 4. y= -3cos(2(x-pi/4))+0.4 thank you so much!

**trig**

Describe the possible values of variable a such that (/72) + (/a) can be simplified to a single term. Note: (/a) is the square root of a.

**trig**

Prove 1+cos X/1-cos X = (csc X + cot X)squared

**Algebra-Trig Please Help ASAP**

A balloon isin the vertical plane of two consecutive milestones of a road. The angles of depression of the stones as viewed from the balloon are 15 degrees and 17 degrees. Find the height of the balloon if (a) the stones are on opposite sides of the balloon, (b) the stones are...

**trig**

cos^4 15-sin^4 15 with out using calculator

**trig**

If cosecant of theta equals 3 and cosine of theta is less than zero, find sine of theta, cosine of theta, tangent of theta, cotangent of theta and secant of theta

**trig**

from an observer tower, a ff.above the level of a river,the angle of depression of a point on the near shore is theta and that of a point directly beyond on the far shore is FI. show that the width of the river is a (cotan theta=p+q/r)

**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**

refer to right triangle ABC with C = 90degrees. Given a= 2 and b=√5 Find the six trigonometric functions of A. and find the angles A and B

**Math [Trig]**

how do you find a full cycle of a trigonemtric function?

**trig**

CSC(theta)=1.92 Find Theta. Now I know CSC = 1/sin but no matter how I enter it into my cal I get an error.

**Algebra/Trig Check Answers please**

Please check these answers thanks. 1. The shadow of a vertical pole is 24.8 feet long when the angle of elevation of the sun is 42degrees 0.0'. Find the height of the pole. Answer: 22.3=height 2. From a point on a lighthouse 108 feet above water, the angle of depression of a ...

**Algebra/Trig Check Answers please**

Can you please check these answers thanks 1. A ladder 14 feet long is leaning against a house. The foot of the ladder is 4.8 feet from the house. Find the angle of elevation of the ladder and the height it reaches on the house. Answer: 13.2=height 18.9 =angle of elevation 2. ...

**Math/trig**

Log radical b/ a^2 is equivalent to 1) 1/2 log b + 1/2 log a 2) l/2 log b- 2 log a 3) 2 log b - 1/2 log a 4) 1/2logb/2 log a

**Math/Trig**

Which logarithmic equation is equivalent to L^m = E 1) LogL E = m 2) logE L = m 3) logm E= L 4) logE m= L

**trig**

The hypotenuse of the right triangle PQR is 16ft. length. The sine of the angle <P is 3/5. How many feet long is the line if QR?

**trig**

If theta is an angle in standard position, state in what quadrants its terminal side can lie if theta is equal to -415 degrees?

**TRIG**

In a right triangle ABC, C = 90°, b = 380.1 inches and c = 589.1 inches. Solve for all the missing parts using the given information. (Round each answer to one decimal place for side and to two decimal places for angles.) A = ° B = ° a = inches IM lOST!

**trig**

I don't understand this. can you please tell how you got each answer? describe how the graph of each function is related to a basic trigonometric graph. 1. y= 1/2cos x 2. y= 2cos x+1 3. y= sin x-4 4. y= sin(x-4) 5. y= sin(3x) 6. y= cos(1/2x) 7. y= -cos x 8. y= -cos x+2 9. y= -...

**trig**

if diameter of the circle is 100 cm. and length of the arc forming the angle is 360 cm. Assume that the earth is a perfect sphere of diameter 8000 miles. Find the distance between: Rome, Italy: latitude 42 degrees north Copenhagen, Denmark: latitude 54.3 degrees north

**trig**

Find sin t,cos t and tan t when the terminal side of an angle of t radians passes through ( -3/5 , -4/5) on the unit circle.

**trig**

Find sin t ,cos t and tan t when the terminal side of an angle of t radians passes through (2 , 7)

**trig**

Find sin t ,cos t and tan t when the terminal side of an angle of t radians passes through (2 , 7)