Martin is putting tape along the edge of a rectangle to make a game court on his driveway. The rectangle is 12 feet long and x feet wide, as shown below. If the rectangle will have a perimeter of 40 feet, which equation below is true?

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