Question
Why are there restrictions on the domains of inverse trigonometric functions
Answers
oobleck
to restrict the domain to a single period (or half-period)
cos(0) = 1
cos(2π) = 1
so what is cos<sup><sup>-1</sup></sup>(1) supposed to be?
cos(0) = 1
cos(2π) = 1
so what is cos<sup><sup>-1</sup></sup>(1) supposed to be?