Question

Dave builds a wheelchair ramp with 1 metre of wood. He wants the vertical height of the ramp to be 50 centimetres. What does the angle of elevation need to be?

Answer 1

`\theta=30^(o)`

Explanation:

1 m is 100 cm

The hypotenuse is 100 cm and the opposite side is 50 cm

`sin \theta=\frac {50}{100}`

`\theta=30^(o)`