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How do you evaluate the six trigonometric functions given t=0?

1 Answer

Jul 15, 2017

We start with $sin 0 = 0, cos 0 = 1$ $sin0=0,cos0=1$ which you should know.

Explanation:

$tan 0 = \frac{sin 0}{cos 0} = \frac{0}{1} = 0$ $tan0=(sin0)/(cos0)=0/1=0$

$cot 0 = \frac{1}{tan 0} = \frac{1}{0} = \pm \infty$ $cot0=1/(tan0)=1/0=+-oo$ (undefined)

$sec 0 = \frac{1}{cos 0} = \frac{1}{1} = 1$ $sec0=1/(cos0)=1/1=1$

$csc 0 = \frac{1}{sin 0} = \frac{1}{0} = \pm \infty$ $csc0=1/(sin0)=1/0=+-oo$ (undefined)

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