1. Chapter 5: Trigonometric Functions Whiteboard Practice Session Lessons 1, 2, & 4 Mrs. Parziale

2. Converting to Degrees Convert to degrees – nearest thousandth

3. Find the Inverse Round to nearest tenth.

4. Find the Angle. A 35 foot ramp is being built to meet the doorway of the Community Building making it handicap accessible. If there is 4 ½ feet from the doorway to the ground, what is the angle at which the ramp must make with the ground? Assume the side of the building is perpendicular to the ground.

5. Find the Missing Side. A cable to a telephone pole makes an angle of 74⁰ with the ground. If the cable is 85 feet, how far above the ground does it meet the pole? Round to the nearest foot.

6. Find the Exact Trig Ratios Find sin Find cos Find tan 7 5 

7. Right Triangle Trig -- Find “a” and “b” c = 10

8. Find the Missing Part Find side a 37 45 56⁰

9. Find the Missing Part Find angle B 37 45 56⁰

10. Find the Missing Part Find angle C 37 45 56⁰ 72.4⁰

11. Use the Law of Cosines or Law of Sines Find m  A Find m  B Find m  C C A B 29 31 48

12. m  B = 30  a =16 b = 10 h= 8 m  B = 34  a =21 b = 14 h= 11.74 Find all missing parts of both triangles

13. Find the Missing Side You are measuring the height of a flag pole. You stand 40 feet from the base of the pole. You measure the angle of elevation from a point on the ground to the top of the pole to be 45 ⁰. Estimate the height of the pole to the nearest foot. 45⁰ 40ft