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If cos x=1/2, then cos 3x =_______________(a) 0(b) -1(c) 1/\(\sqrt{2}\)(d) 1This question was posed to me in my homework.Origin of the question is Trigonometric Functions of Sum and Difference of Two Angles-2 topic in section Trigonometric Functions of Mathematics – Class 11 |
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Answer» The correct CHOICE is (B) -1 |
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