Question

A ladder 14 metre long rests against a wall if the foot of the ladder is 7 metre from the wall then the angle of elevation of the ladder is

Answer 1

Answer:

60 degree

Step-by-step explanation:

$\cos( \alpha ) = \frac{b}{h} = \frac{7}{14 } \\ = \frac{1}{2} \\ so \: \alpha = {60}^{0}$