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निम्नलिखित में किसका मान 1 के बराबर है ?

(A) \(sin^2 \ 45^\circ + cos^2 \ 45^\circ\)

(B) \(sin \ 0^\circ \times cos \ 0^\circ\)

(C) \(cos^2 \ 60^\circ\)

(D) \(sin \ 30^\circ \times \frac{1}{cos \ 30^\circ}\)

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