43-52 - Using Double- or Half-Angle Formulas Use a Double- or Half-Angle Formula to solve the equation in the interval [0, 27). 43. sin 20 + cos 0 = 0 44. tan sin 0 = 0 45. cos 20 + cos 0 = 2 46. tan 0 + cot e = 4 sin 20 47. cos 20 - cos*e = 0 48. 2 sin0 = 2 + cos 20 49. cos 20 - cos 40 = 0 50. sin 30 - sin 60 = 0 Vī sin 51. cos 0 - sin 0 = 52. sin 0 - cos 0 =

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