Question

A ramp has an angle of elevation with the ground of 25 degrees. The vertical rise of the ramp is 10 feet. How long is the ramp? ( Measure along the slant)

Answer 1

angle of elevation

Angle of elevation $= \alpha = 25{}^{\circ}$ , vertical rice $= H = 10$ feet

Solution:

$$\sin \alpha = \frac {H}{L}$$ $$L = \frac {H}{\sin \alpha} = \frac {1 0}{\sin 2 5 {}^ {\circ}} = 2 3. 6 \text { feet}$$

Answer: 23.6 feet