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Please give the formula of cos 2 teta,sin 2 teta 2cos teta sin teta.Thanks a lot.

please verify too: *cos^4teta - sin^4 teta = 2 cos ^2 teta-1 *csc teta + 1 / csc teta -1 = (sec teta + tan teta) ^2

^means sin cube..

please verify

of the triangle is A=(1/2) ab sin teta. How is dA/dt related to da/dt, db/dt, and d(teta)/dt?

solve the equation

Please help!Heres number two PF=PG=8m,FGP=75degrees,calculate the area of the given information. 2]Find the length of FG.

Find the exact value of sin(teta) when Cos = 3/5 and the terminal side of teta is in quadrant 4. So what exactly do I do here?

Value: SIN TETA=.7300 my answer is 46 degree Please explain in detail how to go step by step? thanks

Find the Value of X. X = sin(teta) + cos(teta) + tan(teta) / cos(teta) am getting so confused over this problem. Since I have problems over numbers and signs.

A conic has vertex at the point with polar coordinates (2, pi/2), focus at the pole, and directrix with the polar equation r sin teta = 4. Find the polar equation of the conic. Give also the Cartesian Equation of the conic.

what is the complete solution for this equation. cos^4 teta + cos^2 teta sin^2 teta=cos^2 teta i really need the complete solution. thank you.

of 2sinh(sin(teta)cos(teta) 0<x<(pi/2)

4 sin^2 x -3=0 find the solution set: in words: 4 times sin squared teta minus three equals zero

use the graphs of y = cos (teta) and y = sin (teta) to show that (1/2 pi - teta0 = cos (teta)

PROVE: 1/1+sin teta + 1/1-sin teta = 2sec squared teta PROVE: sinx/1+cosx + 1+cosx/sinx = 2cscx hope you get what i mean and understand the equation coz i dont know how to put the symbol of teta and squared... help me in soving these quations... thank u so much!!!

2 Questions really... Firstly...if z2=(cos2 teta + i sin 2 teta)/2(cos teta +i sin teta) is its argument teta?? Secondly... z1 = 1/[(rt 3)- i] and z2 is as above... solve the simultaneous eqns: z1 - (5/3)z2 = -3i 3z1 - 3iz2 = 19 I guess i have to find a value for teta...so, i tried making z1 subject of the formula and got invalid angles...any better ideas...PLS!

Please help me with this.. Prove the following identities: 1. tan teta + sec teta = sec teta + tan teta 2. (csc teta/sin teta) - (1/tan^2 teta) = 1 3. cot teta = sin teta cos teta + cos^2 teta cot^2 teta thanks so much...godbless

Use the formula F' = lim as h goes to 0, F(x+h) - F (x) / h also, we can use the lim sin teta over teta as teta goes to zero = 1, or the 1-cos teta over teta = 0

Sin teta is equal to what when you have a figure with the following traits. * Right Triangle facing to the left * Hypoteneuse of 1 * Bottom leg is x

1. A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is 31 degrees. From a point 2000 feet closer to the mountain along the plain, they find that the angle of elevation is 35 degrees. How high (in feet) is the mountain? 2.For the acute angle teta with cot (teta)=1 , find sin(teta)= cos(teta)= tan(teta)= sec(teta)= cosec(teta)=

sin8(teta)sin(teta)-cos3(teta)sin6(teta)/cos5(teta)sin2(teta)

pls.. answer this... i don't know sin over 1+cosine teta +cosine teta over sin teta =cosecant