Câu 25: Tính $B = \frac{{1 + 5\sin \alpha \cos \alpha }}{{3 - 2{{\cos }^2}\alpha }},$ biết $ an \alpha = 2.$

Question 1

A. $\frac{{15}}{{13}}$

Answer

A. $\frac{{15}}{{13}}$

Question 2

D. 1

Answer

D. 1

Question 3

B. $\frac{{13}}{{14}}$

Answer

B. $\frac{{13}}{{14}}$

Question 4

C. $\frac{{ - 15}}{{13}}$

Answer

C. $\frac{{ - 15}}{{13}}$

Câu 25: Tính $B = \frac{{1 + 5\sin \alpha \cos \alpha }}{{3 - 2{{\cos }^2}\alpha }},$ biết $\tan \alpha = 2.$