Please help me with this one. I have a test about this tomorrow and still don't quite get it.

Find the exact value of the expression, if possible. Do not use calculator.
sin^-1 [sin (6pi / 7)]

Question

Please help me with this one. I have a test about this tomorrow and still don't quite get it.

Find the exact value of the expression, if possible. Do not use calculator.
sin^-1 [sin (6pi / 7)]

anonymous · Answer

what would be your coterminal angle?

jhannybean · Answer

hint: when you take the inverse of the function, you get the function itself.

jhannybean · Answer

The inverse function outdoes the original function.

jhannybean · Answer

$$\sin^{-1}(\sin(x)) = x$$

blackstreet23 · Answer

but in the answer says that is pi/7

blackstreet23 · Answer

i think is just like that when is around -90 and 90