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If sina+sin^2a=1 so prove that cos^2a+cos^4=1

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If sina+sin^2a=1 so prove that cos^2a+cos^4=1

Posted by Radheyshyam Dahal 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Navya ????‍?❤ 6 years ago

SinA + sin (sq) A =1 SinA =1- sin(sq)A _(1) By identity Sin(sq)A+cos(sq) A =1 1-sin(sq) A =cos(sq)A On putting this value in _(1) Sin A=cos(sq)A On squaring Sin(sq) A= cos (raised to4) A _(2) We have to find Cos(sq) A + sin (sq) A from _(2) =1 by identity

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CBSE > Class 10 > Mathematics