Hello, Joker37!

Did you make a sketch?

To calculate the height of a crane which is on top of a building,

Denis measures the angle of elevation to the bottom and top of the crane.

These were 62° and 68° respectively.

If the building is 42 m high find, to 2 decimal places:

a) how far Denis is from the building

b) the height of the crane. Code:

A o
|\
| \
y | \
| \
| \
B o \
| * \
| * \
42 | *6°\
| * \
| 62° *\
C o - - - - - o D
x

The crane is

The building is

Denis is at

(a) In right triangle ft.

(b) In right triangle ft.

Edit: Too slow again . . . *sigh*

.