Question

The shadow of a flagstaff is three times as long as the shadow of the flagstaff when the sun rays meet the ground at an angle of 60º. Find the angle between the sun rays and the ground at the time of longer shadow'

Answer 1

Let AB be the Flagstaff and, BC be the length of its shadow when the Sun rays meet the ground at an angle of 60º.  Let θ be the angle between the Sun rays and the ground when the length of the shadow of the flagstaff is BD.Let h be the height of the Flagstaff (Fig. 11.56).