Answer:
1. 4/5, 3/5, 4/3 || 2. x = 13.78
Explanation:
1)
Sin = Opposite/Hypotenuse = 16/20 = 4/5
Cos = Adjacent/Hypotenuse = 12/20 = 3/5
Tan = Opposite/Adjacent = 16/12 = 4/3
So the answer is 4/5, 3/5, 4/3
2) The unknown side is the opposite, and 21 is the hypotenuse. Opposite/Hypotenuse is the sine function.
Sin(41) ≈ 0.656
0.656 = x/21
x = 13.776
The closest answer to this is 13.78