Trigonometric graphs

For what angle(s) sin has its maximum?

[math]\frac{3\pi}{2}[/math] [math]2\pi[/math] [math]\pi[/math] [math]\frac{\pi}{2}[/math] [math]0[/math]

For what angle(s) tan doesn't exist?

[math]\pi[/math] [math]\frac{\pi}{2}[/math] 0 [math]2\pi[/math] [math]\frac{3\pi}{2}[/math]

For what angle(s) cos has its minimum?

[math]\frac{\pi}{2}[/math] [math]2\pi[/math] [math]0[/math] [math]\pi[/math] [math]\frac{3\pi}{2}[/math]

Information: Trigonometric graphs