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Trigonometry Values Pi/2

By the definition of the trigonometric functions,

$\displaystyle \sin\left({\pi\over 2}\right)$ $\textstyle =$ $\displaystyle 1$ (1)
$\displaystyle \cos\left({\pi\over 2}\right)$ $\textstyle =$ $\displaystyle 0$ (2)
$\displaystyle \tan\left({\pi\over 2}\right)$ $\textstyle =$ $\displaystyle \infty$ (3)
$\displaystyle \csc\left({\pi\over 2}\right)$ $\textstyle =$ $\displaystyle 1$ (4)
$\displaystyle \sec\left({\pi\over 2}\right)$ $\textstyle =$ $\displaystyle \infty$ (5)
$\displaystyle \cot\left({\pi\over 2}\right)$ $\textstyle =$ $\displaystyle 0.$ (6)

See also Digon




© 1996-9 Eric W. Weisstein
1999-05-26