Question

Please help! Cant quite figure out what I’m supposed to do to solve this

Answer 1

the answe is A) to this equation

Answer 2

A

Explanation:

To answer this question, we can use the following co-function identity:

`\sin(\theta)=\cos(90\textdegree-\theta)`

We know that sin(21°) is 0.36. This means that:

`0.36=\sin(21\textdegree)=\cos(90\textdegree-21\textdegree)`

Subtract within the cosine:

`0.36=\sin(21\textdegree)=\cos(69\textdegree)`

We can remove our second term:

`\cos(69\textdegree)=0.36`

So, our answer is A.

And we're done!