Ex 3.3, 9 - Prove cos (3pi/2+x) cos (2pi + x)[cot (3pi/2 - x)
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Ex 2.2, 13 (MCQ) - Find cos^-1(cos 7pi/6) is equal to (A) 7pi/6
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Ex 2.1, 12 - Find value of cos-1 (1/2) + 2 sin-1 (1/2) - Chapter 2 Cla
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