561 5.3 Trigonometric Function Values and Angle Measures Find the exact value of each expression. See Example 6. 89. sin1305° 90. sin1500° 91. cos1-510°2 92. tan1-1020°2 93. csc1-855°2 94. sec1-495°2 95. tan3015° 96. cot 2280° Complete the table with exact trigonometric function values. Do not use a calculator. See Examples 5 and 6. U sinU cos U tanU cot U sec U csc U 63. 30° 1 2 23 2 223 3 2 64. 45° 1 1 65. 60° 1 2 23 2 66. 120° 23 2 - 23 223 3 67. 135° 22 2 - 22 2 -22 22 68. 150° - 23 2 - 23 3 2 69. 210° - 1 2 23 3 23 -2 70. 240° - 23 2 - 1 22 - 223 3 Find exact values of the six trigonometric functions of each angle. Rationalize denominators when applicable. See Examples 5 and 6. 71. 300° 72. 315° 73. 405° 74. 420° 75. 480° 76. 495° 77. 570° 78. 750° 79. 1305° 80. 1500° 81. -300° 82. -390° 83. -510° 84. -1020° 85. -1290° 86. -855° 87. -1860° 88. -2205° Find all values of u, if u is in the interval 30°, 360°2 and has the given function value. See Example 7. 97. sinu = 1 2 98. cos u = 23 2 99. tanu = -23 100. sec u = -22 101. cos u = 22 2 102. cot u = - 23 3 103. csc u = -2 104. sinu = - 23 2 105. tanu = 23 3 106. cos u = - 1 2 107. csc u = -22 108. cot u = -1 Use a calculator to approximate the value of each expression. Give answers to six decimal places. In Exercises 119–122, simplify the expression before using the calculator. See Example 8. 109. sin38° 42′ 110. cos 41° 24′ 111. sec 13° 15′
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