Precalculus - Trig Day (Exact Values)
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1
2Precalculus Trig Day 2 EXACT VALUES
Name __________________________________Hour ________
NO CALCULATOR ON THIS ENTIRE WORKSHEET
Use special right triangles to write the missing side lengths on each triangle.
Use the triangles above to state the
EXACT VALUE
of the trig functions
WITHOUT
using a calculator.
3. tan 60°
4. sin 45°
7. tan 45°
2. cos
1. sin
5. cos
6. tan
8. cos 30°
10. csc 30°
12. sec 30°
13. csc 45°
9. sin
11. sec
14. cot
Label the
UNIT CIRCLE
to help state the
QUADRANTAL EXACT VALUES.
15. cos 90°
17. cos
18. sin 2
16. sin
22. sin ( −90° )
20. cos 0
21. sin 180°
19. cos
23. sin 6
24. cos 9
26. tan 2
27. tan 180°
28. sec 90°
29. csc 270°
25. tan
31. csc ( −270° )
30. cot 180°
33. sec 2
36. csc 7
35. cot
32. tan
34. sec
Name each
QUADRANT
described. (I, II, III, IV)
37. sin > 0 and cos < 0
38. sin < 0 and cos > 0
39. sin < 0 and tan > 0
40. sec > 0 and csc > 0
(positive)
(negative)
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