1.

The value of \(\left[ \frac{{{\sin }^{2}}25{}^\circ +{{\sin }^{2}}65{}^\circ }{{{\cos }^{2}}24{}^\circ +{{\cos }^{2}}66{}^\circ }+{{\sin }^{2}}61{}^\circ +\cos 61{}^\circ \sin 29{}^\circ \right]\) is:

A. 3
B. 1
C. 2
D. 0
Answer» D. 0


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