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

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 $\csc B$ when $a = 9$ and $b = 7$ .

A) $\frac { \sqrt { 130 } } { 7 }$
B) $\frac { 9 \sqrt { 130 } } { 130 }$
C) $\frac { 7 \sqrt { 130 } } { 130 }$
D) $\frac { \sqrt { 130 } } { 9 }$

Correct Answer:

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