Two Sides of a Right Triangle ABC (C Is the Right

Multiple Choice

Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given
angle. Give exact answers with rational denominators.
-Find $\tan \mathrm { B }$ when $\mathrm { a } = 4$ and $\mathrm { b } = 5$ .

A) $\frac { 5 \sqrt { 41 } } { 41 }$
B) $\frac { 4 \sqrt { 41 } } { 41 }$
C) $\frac { 4 } { 5 }$
D) $\frac { 5 } { 4 }$