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Questions 75-87 (odd only pls) 7582. Evaluating inverse trigonometric functions Without using a calculaton evaluate the following expressions. 75. tan1% 76. cot1(1//) 77. sec1 2

Questions 75-87 (odd only pls)

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7582. Evaluating inverse trigonometric functions Without using a calculaton evaluate the following expressions. 75. tan1% 76. cot1(1/\\/) 77. sec1 2 78. csc_1(1) 79. tan'1 (tan (7T/4)) 80. tan'1 (tan (37T/4)) 81. csc'1 (sec 2) 82. tan (tan'1 1) 8388. Right-triangle relationships Use a right triangle to simplify the given expressions. Assume x > O. 83. cos (tan1x ) 84. tan (cos1x ) 85. cos (sec1x ) 86. cot (tan12x) V 2 + 87. sin (sec1 (x16)) 88. cos (tan'1 (x) 4 V 9 x2

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