Question

find a cofunction with the same value as the given expression. csc 42° select the correct choice below and fill in the answer box to complete your choice. (simplify your answer. type any angle measures in degrees. do not include the degree symbol in your answer.) a. csc 42° = cos □° b. csc 42° = sec □° c. csc 42° = sin □° d. csc 42° = cot □° e. csc 42° = tan □°

Explanation:

Step1: Recall co - function identities

The co - function identity for cosecant and secant is $\csc\theta=\sec(90 - \theta)$.

Step2: Substitute the given angle

Given $\theta = 42$, then $\csc42^{\circ}=\sec(90 - 42)^{\circ}=\sec48^{\circ}$.

Answer:

B. $\sec48$