What is the length of the hypotenuse, c? Round your answer to the nearest hundredth NO LINKS!!

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

Which expression is a perfect cube? a. x8 b. y24 c. m28 d. x64

Ineed the solution to this problem and the steps.