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If cos θ = \(\frac {3}{4}\) then value of cos 2θ is ___________(a) \(\frac {1}{6}\)(b) \(\frac {1}{4}\)(c) \(\frac {1}{8}\)(d) \(\frac {3}{8}\)This question was addressed to me in semester exam.My doubt is from Trigonometric Ratios in chapter Trigonometry of Mathematics – Class 10 |
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Answer» Right option is (C) \(\frac {1}{8}\) |
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