Question

Angle of elevation of the top of a tower from certain point is 30 degree if they observe remove 20m to order tower the angle of elevation of the tower increase by 15 degree find the height of tower

Answer 1

let height of tower be h and dist to point b. h/b =tan 30. after moving 20m twd tower h/(b-20)=tan 45. Solution gives h=27.32 m