[Double angle identity]
Now I'm stuck.
hey ted did you ever figure that out because if so tell me tell me now plz i need this very much
Math - Solving for Trig Equations - For the following equation, why cannot I not...
Trig - Solve: cos2x(2cosx+1) for 0degrees is less than or equal to x is equal to...
Precalculus - How would you solve this trig function: cos2x=sin^2-2 how do you ...
Trigonometry - cos2x(2cosx+1)=0 x=?
trig - prove that (2cosx+1)(2cosx-1)= 1 +2cos2x
Trig - Solve for x in the interval [0,2pi) sin^2x+2cosx=2
trig - I keep trying to find the power reducing formula for sin^4(x), but I can'...
trig - how do you solve: find cos2x if sinx is equal to 1/5
Trig - Solve Sinx=Cos2x-1 for all values between 0 and 2pi
trig - sinx = 4/5 and x terminates in Quadrant II Find sin2x and cos2x How to ...