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If sinx + sin^2x=1,

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then value of cos^2x + cos^4x is = ?

trigonometric-identities

asked Jun 11, 2014 in TRIGONOMETRY by anonymous

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1 Answer

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If

From the pythagorean identities

---> (1)

Now the value of

From the equation (1)

answered Jun 11, 2014 by david Expert

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