Math, asked by chandghosh54, 7 months ago

show that cos^2a+sin^2a+2sin^2acos^2a=1​

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Answered by manjitdas221
1

Answer:

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lhs =  { \cos(a ) }^{2}  +  { \sin(a) }^{2}  + 2 \cos(a)   \times \sin(a)  \\  =   {( \cos(a) +  \sin(a))  }^{2}  \\   = {1}^{2} = 1 = rhs

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