(Solution) If Cos = -.65 Then Cos (-) =____ 8. Cot = 1/3, In Quadrant IV 26. Cos = 1/5, In Quadrant I 34. Tan X =_____ 38. -tan X Cos X = ____ 56. Cot2 (1 Tan2... | Snapessays.com


(Solution) If cos = -.65 then cos (-) =____ 8. cot = 1/3, in quadrant IV 26. cos = 1/5, in quadrant I 34. tan x =_____ 38. -tan x cos x = ____ 56. cot2 (1 tan2...


C1

 

2. If cos ? = -.65 then cos (-?) =____

 

8. cot ? = 1/3, ? in quadrant IV

 

26. cos ? = 1/5, ? in quadrant I

 

34. tan x =_____

 

38. –tan x cos x = ____

 

56. cot2 ? (1 tan2 ?)

 

C2

 

2. sec x / csc x + csc x / sec x

 

18. 4 tan2 B = tan B - 3

 

26. cot t tan t

 

36. tan a / sec a = sin a

 

46. cos ? / sin ? cot ? =1

 

68. sin ? + cos ? = sin ? / (1 – (cos ? / sin ?)) + cos ? / (1 – (sin ? /cos?))

 

84. 1 + cot2 x = sec2 x / sec2 x-1

 

C3

 

6. cos (-15°)

 

72. tan ( pi/4 + x)

 

106. sin (s +t) / cos s cos t = tans + tan t

 

C4

 

20. 1-2 sin2 22 1/2°

 

30. express trigonometric x cos 3x

 

56. 8 sin 7x sin 9x

 

58. cos 5x + cos 8x

 

72. tan 195°

 

112. sin ?/2 = 1/m m= 3/2

 

C5

 

20. y = arcin (-?3/2)

 

28. y = sec-1 (-?2)

 

38. ? = arcsin (-?2/2)

 

62. y= arccos .44624593

 

80. sec (sin-1 9-1/5))

 

94. sin (cos-1 .25)

 

C6

 

2. sin x +2 =3

 

20. 2 cos2 x - ?3 cos x = 0

 

28. cos2 ? = sin2 ? +1

 

36. 4 cos2 ? + 4 cos ? =1

 

44. 2 cos2 x + cos x = 1

 

64. (0, 2pi) 2?3 sin 2x = ?3

 

76. (0°, 360°) -2 cos 2 ? = ?3

 

C7

 

6. sec2 x= find the identity

 

28. find sin (x+y), cos (x-y), tan (x+y) ….sin y = -2/3, cos x = -1/5, x in quadrant II, y in quadrant III

 

32. find sine and cosine…..B, given cos 2B = 1/8, B in quadrant IV

 

38. sin y, given cos 2y = -1/3, with pi/2

 


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