Trigonometric functions and their graphs Quiz

1. What is the amplitude of $y=-4\sin x+2$?

• A. $-4$
• B. $4$
• C. $2$
• D. $8$

2. What is the period of $y=\cos(3x)$?

• A. $120^\circ$
• B. $60^\circ$
• C. $360^\circ$
• D. $1080^\circ$

3. Solve $\tan x=1$ for $0^\circ\le x\le360^\circ$.

• A. $45^\circ$ only
• B. $45^\circ$ and $135^\circ$
• C. $45^\circ$ and $225^\circ$
• D. $45^\circ$ and $315^\circ$

4. What is the least value of $y=2\cos x-1$?

• A. $-1$
• B. $-2$
• C. $1$
• D. $-3$

5. Solve $\cos x=0.5$ for $0^\circ\le x\le360^\circ$.

• A. $60^\circ$ and $120^\circ$
• B. $60^\circ$ and $300^\circ$
• C. $30^\circ$ and $330^\circ$
• D. $60^\circ$ and $240^\circ$