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15. Which of the following is NOT equivalent to sin 40°? c. V1- cos240° c. 2 sin 20° cos 20° 1+cos 80° d. 1-cos 80° d. 2 2 16. If 2 sin 2x = 3 cos2x and 0 < 2x <, then x=, a. 0.25 b. 0.39 c. 0.49 d. 0.52 17. If 4 sin x + 3 = 0 on 0

15. Which of the following is NOT equivalent to sin 40°? c. V1- cos240° c. 2 sin 20° cos 20° 1+cos 80° d. 1-cos 80° d. 2 2 16. If 2 sin 2x = 3 cos2x and 0 < 2x <, then x=, a. 0.25 b. 0.39 c. 0.49 d. 0.52 17. If 4 sin x + 3 = 0 on 0

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15. B

16. C

17. C

15. Which of the following is NOT equivalent to sin 40°? c. V1- cos240° c. 2 sin 20° cos 20° 1+cos 80° d. 1-cos 80° d. 2 2 16. If 2 sin 2x = 3 cos2x and 0 < 2x <, then x= a. 0.25 b. 0.39 c. 0.49 d. 0.52 17. If 4 sin x + 3 = 0 on 0 <x< 2n, then x=, a. 5.43 b. 0.848 c. 3.990 or 5.435 d. 0.848 or 5.435
Transcribed Image Text:15. Which of the following is NOT equivalent to sin 40°? c. V1- cos240° c. 2 sin 20° cos 20° 1+cos 80° d. 1-cos 80° d. 2 2 16. If 2 sin 2x = 3 cos2x and 0 < 2x <, then x= a. 0.25 b. 0.39 c. 0.49 d. 0.52 17. If 4 sin x + 3 = 0 on 0 <x< 2n, then x=, a. 5.43 b. 0.848 c. 3.990 or 5.435 d. 0.848 or 5.435
15. В 16. С 17. С
Transcribed Image Text:15. В 16. С 17. С
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