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1 — sin2x 1 — cos2 (1— (1— www.edugross.com RD Sharma Solutions for Class I I Maths Chapter 5 Trigonometric Functions sinx — cosx cosx cosx sin x x sin2x + cos2x sin x cosx sinx cosx By using the formula, Sin2 x + cos2 x cos2x sin2 x sinx cosx 1 - RHS LHS - RHS Hence proved. 4. cosec x (sec x — Solution: sin x cosx 1) — cot x (1 ... ................
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