1. R IGHT T RIANGLE T RIG & V ECTOR M ATH Unit 2 (Chapter 1 in Cutnell book.)

2. R IGHT T RIANGLES c = hypotenuse Pythagorean theorem: a 2 + b 2 = c 2 a b c Knowing 2 legs of a right triangle, you can calculate the third leg using the Pythagorean Theorem.

3. R IGHT T RIANGLE T RIG a b c Trigonometric functions are ratios of a pair of sides of a right triangle, and depend only on one of the angles, Ɵ Ɵ

4. S OH -C AH - TOA a b c You can only label the sides AFTER you have identified the angle! Ɵ

5. I NVERSE T RIG F UNCTIONS a b c When two sides of the triangle are known, and the angle Ɵ is unknown, use inverse Trig Functions. Ɵ

6. E XAMPLE 1 Find: sin Ɵ cosƟ Ɵ Ɵ 6 8

7. E XAMPLE 2 A chimp sitting against his favorite tree gets up and walks 51m due east and 39m due south to reach a termite mound. A)what is the shortest distance between the tree and the termite mound? B) What angle does the shortest distance make with respect to due east?

8. H OMEWORK Trig WS for Physics Due tomorrow! This WS will be graded for correctness. 1 point for drawing a picture, 1 point for showing work, 1 point for correct answer.