Question

Angle of elevation 4 metre and 9 m straight line complementary prove them

Answer 1

Given that AB is the tower

P,Q are the point at distance 4m and 9m resp

Also,

        PB = 4m

        QB = 9m

And

       Angle of elevation from P is a

       Angle of elevation from Q is b

Give a and b are supplementary

       a + b = 90°

We need to prove AB = 6m