Trig Functions
How do you find an unknown angle if two sides are given?
Use inverse trig.
In triangle ABC, angle A is a right angle. If cos c = 9/14, find sin b.
sin b = 9/14.
If all three sides are given, how do you prove it is a right triangle?
What is the Pythagorean Theorem?
In triangle ABC, angle A is a right angle. If cos b = 12/15, find the tan c.
Tan c = 4/3