# Trigonometry

trig
Prove: 1/cos2A+sin2A/cos2A=sinA+cosA/cosA-sinA

trig
Prove: 1/cos2A+sin2A/cos2A=sinA+cosA/cosA-sinA

trig
If sin A= 1/4 and sin B= -1/2, with A in QII and B in QIV, find tan(A+B)

Trigonometry
I'm having a lot of trouble with graphing trig functions. Can anyone tell me how to graph this equation on a graphing calculator? Sketch the graph of y= sin x in the interval 0 ≤ x ≤4π

trig
what is the amplitude of f(X)=-6sin(3x-7)

trig
cos(sin^-1 x)=sq rt(1-x^2) prove the identity

trig
2cos^2 22.5-1 (find exact value)

Trig
1)y=1-tan(3pi-2x) Find period and phase shift 2)y=-sin(5x+3) Find amplitude,period,and phase shift 3)y=1-sin(3pi-2x)Find amplitude,period,and phase shift 4)y=2csc(2x-1)Find period and phase shift 5)Given the graph of y = sin (x), what transformation can be made to make the ...

Trig
y=sin(2pi*x-pi) find the amplitude, period, and phase shift

Trig
y=sec(2x+1) Find the period and phase shift. Sorry i'm really bad at these.

Trig
y=2tan(x-1) Find the period and phase shift.

trig
Give the following for the function: y=2+cos(5x+3.14 Amplitude: Period: Phase Shift:

Trig
A 7.25 inch circular saw blade rotates at 5200 revolutions per minute. a) Find the angular speed of the saw blade in radians per minute. b) Find the linear speed in feet per minute of one of the 24 cutting teeth as they contact the wood being cut.

Trig
A carousel with a 50-foot diameter makes 4 revolutions per minute. a) Find the angular speed of the carousel in radians per minute. b) Find the linear speed in feet per minute of the platform rim of the carousel.

Trig.
Josh kicks a soccer ball with an initial velocity of 18 feet per second out of a window from a height of 12 feet. The function h(t)= -16t^2+18t+12 represents the height of the soccer ball after t seconds.What is the domain of this function in the context of this problem?

Trig
Why does 11.4(7pi/18)=133pi/30 ?

Trig
Solve the equation 2sin(2x) = cos x. and Solve the equation cos^2(2x)–sin^2(2x)= (√3 / 2).

Trig
Use the half-angle formulas to come up with an exact expression for each function value below. You do not have to simplify your answers. cos(pi/16)

Trig Circular Motion
A es004-1.jpginch circular saw blade rotates at 5200 revolutions per minute. a) Find the angular speed of the saw blade in radians per minute. b) Find the linear speed in feet per minute of one of the 24 cutting teeth as they contact the wood being cut.

Trig
A ferris wheel at the fair has a radius of 60 feet. If it takes 24 seconds to make a full revolution, what is the linear speed for the passengers?

trig
2sin^2x-1=0[0,2pi)

Geom./Trig.
an airplane flies directly overhead at 540mph. 1 minute later is seen at an angle of elevation of 34 degrees. how far did the airplane fly during that time? what is the elevation of the plane?

TRIG
IF Y=5+7C0S 4(0-7). FIND YWHEN 0=42 DEGREES. SMALLEST POSITIVE VALUE OF 0 FOR WHICH Y=1.5

trig
Two tracking stations are on the equator 134 miles apart. A weather balloon is located on a bearing of N 38°E from the western station and on a bearing of N 19°E from the eastern station. How far is the balloon from the western station? Round to the nearest mile.

trig
Find the other endpoint of the line segment with the given endpoint and mid point. 1. Endpoint:(-1, 9), midpoint: (-9, -10) 2. Endpoint: (2, 5), midpoint: (5, 1) 3. Endpoint:(9, -10), midpoint: (4, 8)

trig
prove: cot^2(x)=cos(x)/(sinx)(tanx)

algebra-trig help asap
An isosceles triangle has a base 22 cm long and a base angle of 72 degrees. Find its perimeter.

trig
prove: (tan x + sec x)^2 = 2sec^2 x + 2tan x sec x - 1

trig
prove: (tan x + sec x)^2 = 2sec^2 x + 2tan x sec x - 1

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

trig
Prove: sin(x–y)sin(x+y)=sin^2(x)–sin^2(y)

calculus
need help simplifying some trig identities such as: (csc t) (sin t) cos t = 0.75 and tan t = 0.88, find sec t and cot t; (cot2t) (sin2t) + sin2 t; csc2t - cot2t/sin2t

trig
Prove: (tan x+sec x)^2 = 2sec^2(x)+2tan(x)secx-1

trig
Prove (cscx+cotx)(cscx-cotx)=1

Trig
Prove: (cotx sinx)(secx-cosx)=sin^2(X)

trig
What is cosx=1/2?

Trig
As you ride a ferris wheel, your distance from the ground varies sinusoidally with time. When the last passenger boards the ferris wheel and the ride starts moving, let your position be modeled by the diagram provided. Let t be the number of seconds that have elapsed since ...

trig
Solve for theta, giving a general formula for all of the solution: tan(theta)=-1 sin(theta/2)=1/2

Trig
4sin^(2)x-3=0

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