From the top of a 7 m high building, the angle of elevation of the top of a cable tower is 60 degree and the angle of depression of its foot is 45 degree. Determine the height of the tower.

Answer!!

Sneha

Exploring new things...

Saturday, 28 November 2020 08:39 AM

In $?$ABE,

$tan60_{o}=ABh?$

$h=AB3?$ ....(i)

In $?$ABC,

$tan45_{o}=AB7?$

$AB=7$ ...(ii)

By equation (i) and equation (ii)

$h=73?$

So, height of tower is $=h+7=7(3?+1)$

$tan60_{o}=ABh?$

$h=AB3?$ ....(i)

In $?$ABC,

$tan45_{o}=AB7?$

$AB=7$ ...(ii)

By equation (i) and equation (ii)

$h=73?$

So, height of tower is $=h+7=7(3?+1)$