Answer
a. sine -- iii. cosine
b. tangent -- i. secant
c. cotangent -- ii. cosecant
Work Step by Step
Pythagorean Identities are-
$ \sin^{2}\theta + \cos^{2}\theta$ = 1
$ 1 + \tan^{2}\theta$ = $\sec^{2}\theta$
$ 1 + \cot^{2}\theta$ = $\csc^{2}\theta$
