The diagonals of rectangle NOPQ intersect at point R. If 0Q=2(x+3) and PR= 3x - 5, solve for x.
A. 4
B. 8
C 11
D. 15

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