In left angle ΔABC, AB represents the vertical pole and BC represents the shadow on the ground.θ represents angle of elevation the sun.
tan θ = h / x
But length of shadow = height of the tower, i.e. h = x.
tan θ = h/ h = 1
tan θ = tan 45°
θ = 45°
Thus, angle of elevation of the sun = 45°.
