Question

The picture shows a flagpole, AB, above a house
Rounded to the nearest whole number, what is the height, in feet, of the flagpole AB?

Answer 1

Let AC is the whole length from top of flag to the ground.
AC = 17 tan 60
=> AB = AC - 17 tan 45
= 17 ( tan 60 - tan 45 ) = ...

Answer 2

I don't have a scientific calculator ):

Answer 3

I don't have a scientific calculator ):

Answer 4

You should memorize at least some special degree:

Answer 5

tan 60 = sqrt (3), tan 45 = 1

Answer 6

wow thanks