Trigonometric graphs

For what angle(s) sin has its maximum?

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

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

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

For what angle(s) cos has its minimum?

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

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Information: Trigonometric graphs