# Homework Help: Math: Trigonometry

## Recent Homework Questions About Trigonometry

Trig
cos(3x)=-1

Trig
Solve Sinx=Cos2x-1 for all values between 0 and 2pi

trig
Determine the least positive value of t for which d=0. d=cos((3pi/4)(t)) 0=cos((3pi/4)(t)) I got stuck on this step Please help

trig
Determine the least positive value of t for which d=0. d=cos((3pi/4)(t)) 0=cos((3pi/4)(t)) I got stuck on this step Please help

trig
If theta is a standard position angle and cot theta = 1.85, in which quadrant(s) could theta lie?

trig
if tan(θ)=√(33) / 4 (√ does not ride over 4) find sin(θ)<0 i would just like to know the steps of how to do it.

trig
What would be the force required to push a 100-pound object along a ramp that is inclined 10 degrees with the horizontal?

trig
if sin theta equals 3/7, what is tan theta?

trig
howard and keight who are 2km apart are on a horizontal plane observe a balloon in the same vertical plane with themselves the angles of elevation are 50 degrees and 65 degrees respectively find the height of the balloon. A.if its situated between howard and keight B.If it is ...

trig
verify that 2/1+cos theta - tan squared (theta/2) = 1

trig e-maths
giving that cosx=4/5 and siny=12/13, find cos(x+y) when x is acute and y is obtuse angle

trig
a plane takes off at 10.00am from an airfield, and flies at 120km/h on a bearing of N35W. A second plane takes off at 10.05am from the same airfield, and flies on a bearing of S80E at a speed of 90km/h. How far apart are the planes at 10.25am?

trig
Find the general solution for x if cos2x + sin3x = sinx

Write the general solution to y = arcsin (0.6428). 40°±360°k 140°±360°k 220°±360°k 320°±360°k How do I find the right answer? I am like seriously stuck. I need help please.

trig
In a computer simulation, a satellite orbits around Earth at a distance from the Earth's surface of 2.1 X 104 miles. The orbit is circular, and one revolution around Earth takes 10.5 days. Assuming the radius of the Earth is 3960 miles, find the linear speed (velocity) of the ...

trig
solve for theta 6. tan theta=-1 7. sin(theta/2)=1/2 thank you for your help!

trig
when sin theta+cos theta=square root of 2,find the solution of sin^3 theta+cos^3 theta

Algebra-Trig help asap
A rhombus has sides of 5 cm each and one diagonal is 6 cm long. Find the area of the rhombus.

Math:Trig.!!!!
You (safely) bungee jump from a 200-feet tall bridge in your town. Your distance above the water's surface depends on the time since you jumped. Sketch a reasonable graph.

trig
solve the equation 2 tan C-3=3 tan X-4 algebraically for all values of C in the interval odegrees lessthan or equal C lessthan360 degrees.

Trig-Algebra help asap
A regular octagon is inscribed in a circle with a radius of 5 cm. Find the area of the octagon.

Trig-Algebra help asap
A regular pentagon is inscribed in a circle whose radius measures 7 cm. Find the area of the pentagon.

Trig-Algebra help asap
A rhombus has sides of 5 cm and one diagonal is 6 cm long. Find the area of the rhombus.

Trig-Algebra help asap
The adjacent sides of a parallelogram measure 8 cm and 12 cm and one angle measures 60 degrees. Find the area of the parellelogram.

trig
SOlve over (2,pie) and find the general solution in radians. 2sin3x = square root of 2

trig
5sin(2x)+4cos(x)=0

trig
5sin(2x)+4cos(x)+0

trig
cos x/1+sin x + 1+sin x/ cos x= 2sec x

trig
verify the identity algebraically- (5-5 cos x)(5+5 cos x)=25 (sin^x)

Trig Help
Prove the following: [1+sinx]/[1+cscx]=tanx/secx =[1+sinx]/[1+1/sinx] =[1+sinx]/[(sinx+1)/sinx] =[1+sinx]*[sinx/(sinx+1)] =[sinx+sin^2x]/[sinx+1] =[sinx+(1-cos^2x)]/[sinx+1] =??? This is where I'm stuck. Can someone help me. Please check what I got is right so far it's ...

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 sec theta = radical 5, what is the exact value of cos theta

trig
If sec theta = radical 5, what is the exact value of cos theta

trig
A ship sails 40 miles SOUTH and 15 miles EAST. Find the bearing from where it began? HELP.

trig or geom
i have to use pythagorean theorem to find the leg-measure of x. in the formula, x would be a^2. the hypotenuse is 11 and "b" is unknown. there is also a cosine with a measure of .4 at the top-most angle.. what is x? i don't know how to use cosine with the problem

Trig.
finnd a possible measure of the angle drawn in standard position that passes through the points (ã2,-ã2)

calculus
find max, min and saddle points of the give function f(x,y)=sin(x)+sin(y)+sin(x+y) 0<=x<=pi/4 0<=y<=pi/4 i have that dz/dx=cos(x)+cos(x+y) dz/dy=cos(y)+cos(x+y) and i set them equal to zero but im kinda confused on how to really solve that. i mean i got an answer ...

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
Find all angles in degrees that satisfy the equationtan∝ +√3=0

Trig
If CSC X = 4 in the quadrant 1, what is COS X?

Alg 2 trig
Write a sine equation for period= pie, amplitude=1/2, vertical shift up 1 and phase shift left pie/4. How would the equation be written?

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 you do this? 1-sin^2x/csc^2 x-1

Trig
HELP!!!! I don't know how to do the trig identity with this problem csc^4 x-cot^4x= Csx^2 x + cot^2x

trig
Simplify the expression cos^2 x (sec^2 x-1)

Trig Proofs!
I'm having trouble solving this proof. Can you help? cos^3+sin^3/cosx+sinx = 1-sinxcosx Thanks!:)

trig
solve each equation for è, giving a general formula for all of the solutions: 6. tanè=-1 7. sin(è/2)=1/2 Please show step by step on how to solve these. Im not sure on how to do them. Thank you for your help!

trig.
A ladder 20 feet long leans against the side of a house. Find the height from the top of the ladder to the ground if the angle if the angle of elevation of the ladder is 80°

trig.
A ladder 20 feet long leans against the side of a house. Find the height from the top of the ladder to the ground if the angle if the angle of elevation of the ladder is 80°

trig
if sin a=4/5 and is quadrant 2 and sin b= 8/17 and is in quadrant 1, find cos (a-b)

trig
16. Let W(ƒá ) be a point in Quadrant I on the unit circle with center O. W(ƒá )B is perpendicular to the x-axis at B, OB = 0.6. and W(ƒá )B ƒ­ 0.8. Find:

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+3s​inθ)^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)/sec​t

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

Trig

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?

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