Question

Question one review sheet on determine the value of a to 1 decimal place

Answer 1

So,

Given:

`\sin (A)=0.2588`

We want to find the value of A.

For this, we could apply the sine inverse function:

`A=\sin ^(-1)(0.2588)`

Which is, rounded to one decimal place:

`\sin ^(-1)(0.2588)=15.0`

So, the result is 15.0 degrees.

The process is the same with b:

`\begin{gathered} \cos (A)=0.6794 \\ A=\cos ^(-1)(0.6794) \\ A=47.2 \end{gathered}`

Thus, A=47.2 degrees