Question

A 15 foot board rest against a wall. The angle that the board makes with the ground is 60 degrees. How far is the base of rhe board away from the wall

Answer 1

7.5'

Explanation:

Use trigonometry.

Draw it out.

the hypotenuse is 15.

You want to find the adjacent side.

Use cosine (the adjacent over hypotenuse)

cos60=A/15

15cos60=A

7.5=A