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Trigonometry Part 3(Solution): Advance math series 2000 most important questions.

Trigonometry Part 3(Solution): Advance math series 2000 most important questions.

Solution 81.(d) Solution 82.(a) Solution 83.(c) Solution 84.(b) Solution 85.(b) cos 90°=0. Hence result=0

Solution 86.(c) Solution 87.(b) Solution 88.(a) Solution 89.(b) Solution 90.(b) Solution 91.(a) Solution 92.(c) Solution 93.(b) Solution 94.(b) Solution 95.(d) Solution 96.(b) Let the side of ABC are (a – d), a, (a + d) > 0 is A is smallest and angle corresponding to bigger side is C will be greater. Hence ratio of three sides = 9a – d) : a : (a + d) = 4d : 5d : 6d = 4 : 5 : 6

Solution 97.(b) Solution 98.(c) Solution 99.(d)  Solution 100.(a) Solution 101.(a) Solution 102.(a) Solution 103.(c) Solution 104.(b) Solution 105.(b) Solution 106.(a) Solution 107.(a) →sin B . cos A = Cos B – sinA. cosB → sinA. Cos B + cos A. sin B = cos B →sin (A + B) Solution 108.(d) Solution 109.(b) Solution 110.(c) Solution 111.(c) Solution 112.(b) Solution 113.(a) Solution 114.(b) Solution 115.(c) Solution 116.(d) Solution 117.(a) Solution 118.(c) Solution 119.(b) Solution 120.(d) 