Solve the following algebraically:  a) tan (theta)+cos(theta)/1+sin(theta)=sec (theta) b) 1-cos(2theta)/2= sin^2(theta)

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A: Given,

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A: a) We know that Therefore, we have

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A: let  A=sin4x-sin2xcos4x-cos2xformula used is…

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A: Please refer to the image below

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