1. 9.2 F UNDAMENTAL T RIGONOMETRIC I DENTITIES AND U SING A C ALCULATOR

2. T HE T RIGONOMETRIC F UNCTIONS

3. T HE R ECIPROCAL I DENTITIES

4. T HE Q UOTIENT I DENTITIES

5. U SE THE GIVEN INFORMATION TO FIND THE VALUE OF EACH OF THE FOUR REMAINING TRIGONOMETRIC FUNCTIONS.

7. U SING A C ALCULATOR TO E VALUATE T RIGONOMETRIC F UNCTIONS Remember that when we evaluate trigonometric functions: the input is the measure of an acute angle and the output is the ratio of the lengths of the sides

8. U SING A C ALCULATOR TO E VALUATE T RIGONOMETRIC F UNCTIONS For most acute angles, we approximate the value of each of the trigonometric functions using a calculator. Look for the keys on your calculator. To evaluate csc, sec, and cot, we must use the reciprocal identity and/or the reciprocal keys on the calculator.

9. U SE A CALCULATOR TO FIND THE VALUE TO FOUR DECIMAL PLACES. Scientific Calculator Graphing Calculator

10. U SE A CALCULATOR TO FIND THE VALUE TO FOUR DECIMAL PLACES. Scientific Calculator Graphing Calculator

11. U SE A CALCULATOR TO FIND THE VALUE OF THE SIX TRIGONOMETRIC FUNCTIONS FOR THE GIVEN ANGLE TO FOUR DECIMAL PLACES.

12. F IND THE MEASURE OF THE SIDE OF THE RIGHT TRIANGLE WHOSE LENGTH IS DESIGNATED BY A LOWERCASE LETTER. R OUND ANSWERS TO THE NEAREST WHOLE NUMBER. 64 ° 18 x

13. F IND THE MEASURE OF THE SIDE OF THE RIGHT TRIANGLE WHOSE LENGTH IS DESIGNATED BY A LOWERCASE LETTER. R OUND ANSWERS TO THE NEAREST WHOLE NUMBER. 19 ° a 15