Ôn tập chương VI (phần 1)

A. 1

B. $\frac{1}{8}$

C. 0

D. $-\frac{1}{8}$

A. -1

B. 0

C. 1

D. 2

A. -1

B. 0

C. 1

D. 2

A. -1

B. 0

C. $\frac{1}{2}$

D. 1

A. $\sqrt{2}$

B. $\frac{\sqrt{2}}{2}$

C. $\frac{1}{8}$

D. $\frac{\sqrt{2}}{8}$

A. $sin\left(\alpha +\beta \right)=\sin \gamma$

B. $\cos \left(\alpha +\beta \right)=\cos \gamma$

C. $\tan \left(\alpha +\beta \right)=tan\gamma$

D. $cot\left(\alpha +\beta \right)=cot\gamma$

A. $\tan \left(2\alpha +2\beta \right)=\tan 2\gamma$

B. $cot\left(2\alpha +2\beta \right)=cot2\gamma$

C. $\sin \left(2\alpha +2\beta \right)=\sin 2\gamma$

D. $\cos \left(2\alpha +2\beta \right)=\cos 2\gamma$

A. $\cos \left(\frac{\alpha +\beta }{2}\right)=\cos \frac{\gamma }{2}$

B. $\cos \left(\frac{\alpha +\beta }{2}\right)=\sin \frac{\gamma }{2}$

C. $\cos \left(\frac{\alpha +\beta }{2}\right)=-\cos \frac{\gamma }{2}$

D. $\cos \left(\frac{\alpha +\beta }{2}\right)=-\sin \frac{\gamma }{2}$

A. $\tan \left(3\alpha +3\beta \right)=-\tan 3\gamma$

B. $cot\left(3\alpha +3\beta \right)=-cot3\gamma$

C. $sin\left(3\alpha +3\beta \right)=-sin3\gamma$

D. $\cos \left(3\alpha +3\beta \right)=-\cos 3\gamma$

A. $4\sin \frac{M}{2}+\sin \frac{N}{2}+\sin \frac{P}{2}$

B. $4\cos \frac{M}{2}+\cos \frac{N}{2}+\cos \frac{P}{2}$

C. $2\sin \frac{M}{2}+\sin \frac{N}{2}+\sin \frac{P}{2}$

D. $2\cos \frac{M}{2}+\cos \frac{N}{2}+\cos \frac{P}{2}$

A. $\sin M\sin N\sin P$

B. $4\sin M\sin N\sin P$

C. $\cos M\cos NcosP$

D. $4\cos M\cos NcosP$