Step-by-step explanation:
Use the sine and cosine trig functions
21) cos(52)=13/x
x=13/cos(52)
x=21.1
22) sin(75)=6/x
x=6/sin(75)
x=6.2
3x greater than or equal to 20
3x = 20
X= 7 games for the pass to be better
3(7)=21
567 / 18 = 31.5
But because she can't make half a shelf, the answer would be 32 shelves
