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

question 23

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 $\sin \mathrm { A }$ when $a = 8$ and $b = 7$ .

• A) \(\frac { \sqrt { 113 } } { 7 }\)
• B) \(\frac { \sqrt { 113 } } { 8 }\)
• C) \(\frac { 8 \sqrt { 113 } } { 113 }\)
• D) \(\frac { 7 \sqrt { 113 } } { 113 }\)

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