# MCQs in Plane Trigonometry Part II - Answers

Answers key for the Compiled MCQs in Plane Trigonometry Part 2 of the series as one topic in Engineering Mathematics in the ECE Board Exam.

Below are the answers key for the Multiple Choice Questions in Plane Trigonometry – MCQs Part 2.

51. C. 152°

52. A. 67.5°

53. C. 90°

54. A. 540°

55. D. 810°

56. D. 43°

57. B

58. D. x

59. A. 0.984

60. B. –1

61. A. 60°

62. A. 0.309

63. B. A + 2B = 30°

64. A. 8/17

65. D

66. B. 80°

67. A. 3

68. C. 3Ï€/2

69. D. Ï€/5

70. D. 0.4

71. A. 1 & -5/13

72. A. 3/5

73. B. 0.250

74. D. 2/3

75. C. 8/9

76. D. x2 + y2 = 10

77. D. 0

78. C. A conditional equation

79. C. cot x

80. D. (2x2 – 4)/x2

81. C. 63.56

82. B. Ï€/4

83. C. 0.281

84. A. 4

85. A. sin x

86. C. 1

87. D. sin 2Î¸

88. D. 2 cos2 Î¸ – 1

89. C. cos 2a

90. C. cos 3x – sin 3x

91. C. sin 2Î¸

92. C. sinh 2x

93. A. 1

94. A. sin Î¸ = 1/√(1 + x4)

95. B. √2 times

96. B. 2 mils

97. B. 4.72 degrees

98. A. 216 cm2

### Online Questions and Answers in Plane Trigonometry Series

Following is the list of practice exam test questions in this brand new series:

Plane Trigonometry MCQs
PART 1: MCQs from Number 1 – 50                        Answer key: PART I
PART 2: MCQs from Number 51 – 100                   Answer key: PART II
PART 3: MCQs from Number 101 – 150                   Answer key: PART III

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