1. OBJ: SWBAT APPLY TRIG FUNCTIONS (8.3) HW (DAY 41): WORKSHEET- ODDS STORYBOOK: “RIGHT TRIANGLES” PEARSONSUCCESS.NET (DUE FRIDAY) WU: WKS (1, 6, 23, 24, 26, 32, 34, 36) *HW/HW LOG/STORYBOOK AS REFERENCE

4.  Evaluate: cos 41 , first press the “cos” button on the calculator, then type in “41” and then press enter. So to the nearest ten-thousandths, cos 41   _____  Evaluate the following, round to the nearest ten- thousandths: ▪ sin 43   __________ ▪ cos 84   __________ ▪ tan 21   __________

5.  A 16-foot ladder is propped against a building. The angle it forms with the ground measures 55 . How far up the side of the building does the ladder reach?  A plane is one mile above sea level when it begins to climb at a constant angle of 2  for the next 70 ground miles. How far above sea level is the plane after its climb?

6.  To find the acute angles in right triangles you have to use the inverse trigonometric functions.  This is an example of a Pythagorean Triple. Can you give at least two more examples of a Pythagorean Triple? 5 4

7.  Find the measure of each angle to the nearest tenth of a degree:

8. 1. 4. 3. 2.

9.  Use trig ratios to find missing side lengths of right triangles  Use inverse trig functions to find angle measures