Question

Picture below. find y.

Answer 1

Hello!

We are given the opposite length, 9, along with the adjacent length y. The tangent is what deals with the opposite and adjacent sides. Let's find the tangent of 30.

tan30≈0.58

This gives us the equation below.

0.58=9/y

We multiply both sides by y.

0.58y=9

We divide both sides by 0.58.

y≈15.52

I hope this helps!

Answer 2

This is a 30,60,90 right triangle. Here is how I found the side from the diagram on the napkin