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Trignometry

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4 Jun 2012 16:27:50 IST

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303

inequations

Engineering Entrance , JEE Main , JEE Main & Advanced , Mathematics , Trigonometry

which of the following is not the general solution of the equation 2^cos2x + 1 =3.2^-sin²xA] n?B] [n+1/2]?c] [n-1/2]?D] none of these

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ROHAN KUMAR

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6 Jun 2012 10:12:39 IST

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rewrite the question I cannot understand your answer

PRAKASH KUMAR

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7 Jun 2012 20:19:11 IST

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which of the following is not the general solution of the equation 2^cos2x + 1 = 3 . 2^-sin²x.A] n?B] (n+1/2)?C] (n-1/2)?D] none of these

ROHAN KUMAR

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8 Jun 2012 07:32:23 IST

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simple steps are::: (1) change COS2x=1-SIN^2x (2)then equation will become 2.2^-sin^2x +1 = 3.2-^sin^2x (3)then u will get sin^2x=1 (4)so ans. will be x=n(pie) +_ pie/2

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