Question

Using the triangle below, which equation can be used to solve for x?
A. sin 30° = 10/x
B. sin 30° = x/10
C. cos 30° = x/10
D. cos 30° = 10/x

Answer 1

length of side adjacent to the 30° angle: 10
length of side opposite to the 30° angle: unknown
length of hypotenuse: x

cosθ = adjacent/hypotenuse
sinθ = opposite/hypotenuse

Answer 2

Ah, thank you so much

Answer 3

no prob :)