H(x)=x^2+1 k(x)=x-2

(h+k)(2)=

(h-k)(3)=

Evaluate 3h(2)+2k(3)=

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