Question

the three expressions, sin-1, cos-1, and tan-1 are called _____ trig functions and are used to find the measure of the acute angles of a right triangle if you know the lengths of at least two sides.

Answer 1

theyre called inverse funtions .

inverse of :

cos= cosectant

tan= cotangent

sin= secant

Answer 2

Inverse.

Explanation: