Question

Find sin A, cos A, and tan A.
2.
A
4
45°
B

Answer 1

Check the picture below.

`\sin(A )=\cfrac{\stackrel{opposite}{2√(2)}}{\underset{hypotenuse}{4}}\implies \sin(A )=\cfrac{√(2)}{2} \\\\\\ \cos(A )=\cfrac{\stackrel{adjacent}{2√(2)}}{\underset{hypotenuse}{4}}\implies \cos(A )=\cfrac{√(2)}{2} \\\\\\ \tan(A )=\cfrac{\stackrel{opposite}{2√(2)}}{\underset{adjacent}{2√(2)}}\implies \tan(A)=1`