Don’t understand how to do
1. x/2 - 12 = -14
2. -3 + 33= -12
3. x/5 + 7 = 16
4. x/-3+11=8
5. 3x+2= -55
6.

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