Asandbox is 45 yards. what is the length in feet

What’s the answer ? use the picture to see the problem

Rewrite so the subject can be y in the formula d=m-y/y+n

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