The double angle formula for the sine is

The right hand side is exactly your expression, where 
So, rewriting the expression from right to left, we have

No because if you do -5+10= it equals positive 5 and not a negative number.
Answer:
2
Step-by-step explanation:
10/16 ÷ 5/16
0.625 ÷ 0.3125
2
x +y = 81 million
let x be the short stop and y be the pitcher
so pitcher (y) gets 2 times what the the shortstop (x) gets so y = 2x
so x + 2x = 81 million
3x = 81
x = 27
the short stop makes 27 million
the pitcher makes 54 million