Question

Part A

Which equation can we use to find the length of the side labeled x?

A cos 30° = x/5
B tan 30° = 5/x
C sin 30° = x/5
D sin 30° = 5/x

Part B
What is the value of x?

Answer 1

1) D

2) 10

Explanation:

sin(30) = opposite/hypotenuse

sin(30) = 5/x

½ = 5/x

x = 5/0.5

x = 10