Question

Fine the angle of depression if an observer 150cm tall looks at the tip of his shadow which is 150cm from his foot

Answer 1

In this triangle
height=150cm
=1.5m
base=150cm
=1.5m

This triangle is right angled triangl
therefore angle b=90°
two side of triangle are equal that is 1.5m

therfore ,angle a=angle b
Let angle a=angle b=x=Φ
in triangle

angle a+angle b+angle c = 180°
x+90°+x=180°
2x+90°=180°
2x=180°-90°
2x=90°
x=90°/2
x=45°

therefore Φ=45°

THE ANGLE OF DIPERESION IS 45°