How do you evaluate $sin^-1(sin((pi)/10))$ ?

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Answer 1 · 2016-07-08T16:38:58

$pi/10$ .

Use $sin^(-1)(sin a)$ = the operand a.

Here $a = pi/10$

Had it been $sin^(-1)(sin( (9pi)/10))$ , instead, the value will be the new

operand $(9pi)/10$ .

How do you evaluate sin^-1(sin((pi)/10))sin^-1(sin((pi)/10))?