Answer :

If the given equation is an identity, then it is true for every value of θ.

So, let θ = 30°


So, for θ = 30°, consider the L.H.S. = tan2 30° + sin 30°


= (1/√3)2 + (1/2)


= (1/3) + (1/2)


= 5/6


Consider the R.H.S. = cos2 30° = (√3/2)2


= 3/4


Therefore, L.H.S. R.H.S.


Thus, the given equation is not an identity.


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