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[NCERT EXEMPL13. If 2sin2 θ-cos 2e-2, then find the value of 0 . |
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Answer» 2sin^2--cos^2=2(cos^2+sin^2)2sin^2-cos^2=2sin^2+2cos^2-cos^2=2cos^22cos^2+cos=03cos^2=0cos^2=0cos^2∅=cos^290∅=90 |
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