Using the identity sin? 0 + cos2 0 = 1, find the value of tan 6, to the nearest hundredth, if sin 0 = 0.76 and < 0 <.

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