Verify the identities.  A) (2sinx+cosx)^2 + (2cosx-sinx)^2=5 B) (cos(theta)+1)/tan^2(theta)= (cos(theta))/sec(theta)-1 C) (1-cosx)/(1+cosx) = (cotx-cscx)^2

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A: This question is related to trignometry, We will solve it using trignometric identities.

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A: you can clearly understand if you follow the below solution