1 Practice Problems 1.Write the following to 4 decimal places A)sin 34 o = _____ B) cos 34 o = _____ C)tan 4 o = _____ D) cos 84 o = _____ E)tan 30 o = _____ F) cos 18 o = _____

2 Practice Problems 2.Solve for x. Write the answer to 2 decimal places. A)B)

3. C)D) E)F)

4 Chapter 5 Trigonometry Consider  ABC Label the sides as hypotenuse (hyp), opposite (opp), and adjacent (adj) for angle A A B C

5 Label the sides as hypotenuse (hyp), opposite (opp), and adjacent (adj) for angle B Note: The opposite and adjacent switches places when switching angles. The hypotenuse does not switch. It is always across from the right angle. A BC

6 Trig Functions sin = cos = tan = SOHCAHTOA Some Old Hippie Caught Another Hippie Trippin’ On Acid

7 Write the trig ratios for angle A A B C sin A= cos A = tan A =

8 Practice: For each of the following triangles find A) the missing side (to one decimal place) B) the trig ratios for angles A and B 1. A B C 13 12