How do you find the exact value of $arcsin1$ ?

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Answer 1 · 2016-12-30T12:55:34

$arcsin(1)=pi/2$

By general definition the $arcsin$ function is defined as having a range $[0,pi)$

If we want a value $theta= arcsin(1)$
or, as an alternate view, $sin(theta)=1$

Within the range $[0,pi)$ the only value for $theta$ that satisfies this condition is $theta=pi/2$

How do you find the exact value of arcsin1arcsin1?