Question

I'll fan. Just help me with this:
From the top of a 40m tower, an observer measures the angle of depression to a boat in the water to be 28 degrees. How far is the boat from the base of the tower?

Answer 1

First,Draw picture.

Answer 2

62 = 90 - 28
Properties of triangle.

Answer 3

Tan 62 = x/40
Where x is opposite side
40 is adjacent side

Answer 4

Value of tan 62 is 1.88

Answer 5

1.88 = x/40

Answer 6

Moving to 40 to the LHS

Answer 7

1.88*40 = x

Answer 8

18.8*4 = x
I remove the zero of forty and gave it to 1.88 which is now 18.8