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OpenStudy (anonymous):
In right triangle RST, ST = 5, RT = 12 and RS = 13. Find cos R. A. 5/13 B. 12/5 C. 12/13 D. 5/12
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OpenStudy (anonymous):
triangle
OpenStudy (espex):
Recall your trig functions, SOH CAH TOA, and apply them to the angle and sides you are interested in.
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