Solve: cos^2(θ) - sin^2(θ) = √3/2. (0 degrees, 360 degrees).

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x