Question

How do I find tan of fada?

Answer 1

Explanation:

You have to remember that

cos^2 + sin^2 = 1

then

sin^2 = 1- cos^2

sin^2 = 1 - (8/17)^2

sin^2 = 225/289

sin = + 15/17 ( we are told that it is positive in the question)

tan = sin / cos = (15/17) / ( -8/17) = - 15/8 or - 1 7/8