M110 Fa17 Page 1/7
Worksheet 18 KEY - Inverse Trigonometric Functions (§7.4)
1. arcsin (−1) = −π
22. arcsin −√3
2!=−π
33. arcsin −√2
2!=−π
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4. arcsin −1
2=−π
65. arcsin (0) = 0 6. arcsin 1
2=π
6
7. arcsin √2
2!=π
48. arcsin √3
2!=π
39. arcsin (1) = π
2
10. arccos (−1) = π11. arccos −√3
2!=5π
612. arccos −√2
2!=3π
4
13. arccos −1
2=2π
314. arccos (0) = π
215. arccos 1
2=π
3
16. arccos √2
2!=π
417. arccos √3
2!=π
618. arccos (1) = 0
19. arctan "−√3=−π
320. arctan (−1) = −π
421. arctan −√3
3!=−π
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22. arctan (0) = 0 23. arctan √3
3!=π
624. arctan (1) = π
4
25. arctan "√3=π
326. arccot "−√3=5π
627. arccot (−1) = 3π
4
28. arccot −√3
3!=2π
329. arccot (0) = π
230. arccot √3
3!=π
3
31. arccot (1) = π
432. arccot "√3=π
633. arcsec (2) = π
3
34. arccsc (2) = π
635. arcsec "√2=π
436. arccsc "√2=π
4
37. arcsec 2√3
3!=π
638. arccsc 2√3
3!=π
339. arcsec (1) = 0
40. arccsc (1) = π
241. arcsec (−2) = 4π
342. arcsec "−√2=5π
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