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OpenStudy (anonymous):
help please! will give medal! What is cos D? Option A: 5/12 Option B: 12/5 Option C: 12/13 Option D: 5/13
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OpenStudy (anonymous):
OpenStudy (anonymous):
The formula for cosine is adjacent over hypotenuse. So the hypotenuse of the triangle is 13 and the adjacent of the angle you are trying to find is 5. Just divide 5 by 13 and that should be your answer. Although I admit it sounds strange.
OpenStudy (anonymous):
Oh okay makes sense! thank you!
OpenStudy (anonymous):
Sure thing!
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