Question

what is height of tower Ab? ​

Answer 1

Answer:

Let h be the height of the tower AB

∴

a

h

=tanp

b

h

=tan(90−p)=cotp

∴

a

h

×

b

h

=tanp×cotp=1

⇒h

2

=ab⇒h=

ab

Answer 2

Answer:

AB = 40 × 0.5 = 20m ( is the height of tower AB)