Question

If cos 37 degrees is close to 4/5 which is closest the the measure of op?

Answer 1

$Cos(37)= \frac{adjacent}{hypothenuse} = \frac{4}{5}$
The hypotenuse is 5 unit and the adjacent side to the angle is 4 unit. We can find the other side using Pythagoras theorem

$\sqrt{5^{2}- (4^{2}) } = \sqrt{9}=3$

Hence the value of $sin(37)= \frac{opposite}{hypothenuse}= \frac{3}{5}$