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°

Step-by-step 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

          $tanA=\frac{BC}{AB}\\\\tanA=\frac{160}{800}\\\\A=11.31^0$

Angle did the helicopter take off from is 11.31°