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The number of values of the triplet (a,b,c) for which acos2x + bsin2x + c = 0 is satisfied by all real x is : A. 0 B. 2 C. 3 D. Infinite |
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Answer» The number of values of the triplet (a,b,c) for which acos2x + bsin2x + c = 0 is satisfied by all real x is : A. 0 B. 2 C. 3 D. Infinite |
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