Question

Find the measure of the angle, round the the NEAREST degree: sin A = .6691

Answer 1

The sine of the angle is

`\begin{gathered} \sin A=0.6691 \\ A=41.9976 \\ A\approx42\text{ (rounded to the nearest degree)} \end{gathered}`

To calculate the value of the sine of the angle, you need a calculator.

(1) You first input the value of the sine of the angle, that is, you input 0.6691

(2) Next you press the "2nd Function" button and the button with the sine on it becomes

`\sin ^(-1)`

(3) You press the "arc sine" button (after step 2) and your answer pops up