Question

A helicopter takes off from the ground 800 feet from the base of a building. It flies in a straight line directly to the top of the building. If the building is 160 feet tall, what angle did the helicopter take off from?

Answer 1

Angle did the helicopter take off from is 11.31°

Explanation:

Refer the given figure.

The initial position of helicopter is A.

It needs to go to position C.

We need to find angle A.

We have

`tanA=(BC)/(AB)\\\\tanA=(160)/(800)\\\\A=11.31^0`

Angle did the helicopter take off from is 11.31°