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ohaa [14]
3 years ago
13

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 bo

ard away from the wall
Mathematics
1 answer:
Iteru [2.4K]3 years ago
5 0

Answer:

7.5'

Step-by-step 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

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