SECTION 6.2 More on Trigonometric Equations 359 9. 4 sin 0-2 csc 0 = 0 10. 4 cos 0 - 3 sec 0 = 0 11. sec 0 2 tan 0 = 0 12. csc 02 cot 0 = 0 13. sin 20 - cos 0 = 0 sin 20 = 0 14. 2 sin 0 0.i & 19 6ao E 15. 2 sin 0 1 = csc 0 1 = sec 0 16. 2 cos 0 Solve each equation for x if 0 only. x< 2TT. Give your answers in radians using exact values 18. cos 2x - cos x 2-0 17. cos 2x -3 sin x - 2 = 0 20. sin x -cos 2x = 0 cos x-cos 2x 19. 22. 2 sin2 x - cos x - 1 = 0 21. 2 cos2 x + sin x - 1 = 0 24. 4 cos2 x - 4 sin x - 5= 0 23. 4 sin2 x + 4 cos x - 5 = 0 26. 2 cos x + tan x secx 25. 2 sin x + cot x - cscx = 0 28. sin x - cos x = V2 27. sin x + coS X =V2

Question

question number 23

SECTION 6.2
More on Trigonometric Equations
359
9. 4 sin 0-2 csc 0 = 0
10. 4 cos 0 - 3 sec 0 = 0
11. sec 0
2 tan 0 = 0
12. csc 02 cot 0 = 0
13. sin 20 - cos 0 = 0
sin 20 = 0
14. 2 sin 0
0.i & 19
6ao E
15. 2 sin 0 1 = csc 0
1 = sec 0
16. 2 cos 0
Solve each equation for x if 0
only.
x< 2TT. Give your answers in radians using exact values
18. cos 2x - cos x 2-0
17. cos 2x -3 sin x - 2 = 0
20. sin x -cos 2x
= 0
cos x-cos 2x
19.
22. 2 sin2 x - cos x - 1 = 0
21. 2 cos2 x + sin x - 1 = 0
24. 4 cos2 x - 4 sin x - 5= 0
23. 4 sin2 x + 4 cos x - 5 = 0
26. 2 cos x + tan x
secx
25. 2 sin x + cot x - cscx = 0
28. sin x - cos x = V2
27. sin x + coS X =V2
Expand
Transcribed Image Text

SECTION 6.2 More on Trigonometric Equations 359 9. 4 sin 0-2 csc 0 = 0 10. 4 cos 0 - 3 sec 0 = 0 11. sec 0 2 tan 0 = 0 12. csc 02 cot 0 = 0 13. sin 20 - cos 0 = 0 sin 20 = 0 14. 2 sin 0 0.i & 19 6ao E 15. 2 sin 0 1 = csc 0 1 = sec 0 16. 2 cos 0 Solve each equation for x if 0 only. x< 2TT. Give your answers in radians using exact values 18. cos 2x - cos x 2-0 17. cos 2x -3 sin x - 2 = 0 20. sin x -cos 2x = 0 cos x-cos 2x 19. 22. 2 sin2 x - cos x - 1 = 0 21. 2 cos2 x + sin x - 1 = 0 24. 4 cos2 x - 4 sin x - 5= 0 23. 4 sin2 x + 4 cos x - 5 = 0 26. 2 cos x + tan x secx 25. 2 sin x + cot x - cscx = 0 28. sin x - cos x = V2 27. sin x + coS X =V2

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