Question

Use a calculator to approximate the measure of
∠ A to the nearest tenth of a degree

Answer 1

`\tan(A )=\cfrac{\stackrel{opposite}{12}}{\underset{adjacent}{18}} \implies \tan(A)=\cfrac{2}{3}\implies A =\tan^(-1)\left( \cfrac{2}{3} \right)\implies A \approx 33.7^o`

Make sure your calculator is in Degree mode.