Question

PLEASE HELP WITH THESE TWO QUESTIONSSS 1. Which value is equivalent to sin20∘?

2. What is the measurement of PQ?

Answer 1

a)
`\cos(70\degree)`

b) 12.72 units

Explanation:

Recall that the sine and cosine are completed functions.

This means that:
`\sin(x)=\cos(90-x)`

`\sin(20\degree)=\cos(90-20)`

`\sin(20\degree)=\cos(70\degree)`

Recall that: sine ratio is opposite/hypotenuse

`\sin 58=(|PQ|)/(15)`

This implies that:

`|PQ|=15\sin 58`

`|PQ|=15(0.848)`

`|PQ|=12.72`