Gaokao Math Practice Question
若 $\tan \alpha=\frac{3}{4}$, 则 $\cos ^{2} \alpha+2 \sin 2 \alpha=(\qquad)$
- A.$\frac{64}{25}$
- B.$\frac{48}{25}$
- C.1
- D.$\frac{16}{25}$
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