Trigonometry: Addition & Subtraction Formulas (Evaluating Expressions with Inverse Trig Functions)

We already know how to do problems like this - or almost anyway. We'll start with a review of the concepts we already know that will help us with this type of question and then apply them to the specific type of problems from this Topic.

00:00 Review
03:30 Example: The Sine of a Sum of Inverse Trig Functions

[stevienelson]

The correct answer to the example problem at the end is 5/root50. Her root5 hypotenuse turns into just a 5.