Sharp EL-9600 - Page 93

Answer Key/TRIGONOMETRY USING THE SHARP EL-9600 89
SOLUTIONS TO SELECTED
ACTIVITIES
2. EVALUATING TRIGONOMETRIC
FUNCTIONS
ADDITIONAL PROBLEMS
1. .8910
2. .7813
3. 2
4. .9563
5. .4816
6. -1.4142
BLACKLINE MASTERS 2.3-2.4
ACTIVITY 1 ACTIVITY 2
1. .9848 7. -.5878
2. .9848 8. -.8660
3. 2.7475 9. 1
4. 1.2208 10. -1.4142
5. 1.0785 11. -2
6. 1.1918 12. -2.0765
ACTIVITY 3 ACTIVITY 4
13. 3090 19. .5878
14. .8387 20. -.9010
15. 1.0355 21. -1
16. 1.0038 22. 2.9238
17. -1.2208 23. 2.6131
18. .7002 24. .1438
3. GRAPHICAL VERIFICATION OF
FORMULAS OR IDENTITIES
ADDITIONAL PROBLEMS
1. Identity
2. Identity
3. Identity
BLACKLINE MASTER 3.3
Identity
BLACKLINE MASTER 3.4
Identity
BLACKLINE MASTER 3.5
ACTIVITY 3 ACTIVITY 4
Identity 1. Identity
2. Identity
3. Identity
4. AMPLITUDE, PERIOD AND PHASE
SHIFT
ADDITIONAL PROBLEMS
1. flipped over, rising faster
2. period is 3π
3. shifted right
4. shifted left and up 2
BLACKLINE MASTER 4.1
3 sin x has an amplitude of 3, -2sin x is flipped over
with an amplitude of 2
BLACKLINE MASTER 4.2
The function has moved 3 to the right, and down 2
BLACKLINE MASTER 4.3
1. larger amplitude
2. smaller amplitude
3. smaller period
4. larger period
5. moved right
6. moved left
7. larger amplitude, moved left ,
smaller period
8. pinched in, larger period
9. larger period, moved right
10.moved farther from x-axis, smaller
period
11.moved closer to x-axis, moved
right
5. INVERSE TRIGONOMETRIC
FUNCTIONS
ADDITIONAL PROBLEMS
1. -44.427°
2. 60°
3. -63.4349°
4. -30°
5. .2014
6. 2.2143
7. 1.2490
8. .3218
9. .8411
BLACKLINE MASTER 5.3
1. 53.1301°
2. 126.8698°
3. 63.4349°
4. 2.4484
5. .6289
6. -.7854
6. SOLVING TRIGONOMETRIC EQUATIONS
ADDITIONAL PROBLEMS
1. -60° and 60°
2. 90°
3. -90, 30°, 150°
4. 3.1416
π
2
π
2
π
2
π
6
π
6
π
6
π
12
2π
3