Based on the diagram, what is cos A?
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COS A=

The cos A will be b/c
Cosine function in a triangle is the ratio of the adjacent side to that of the hypotenuse
The steps are as follow:
AB = c
BC = a
AC = b
Cos A = Adjacent side to A / Hypoteneous
Cos A = AC / AB
Cos A = b / c
Therefore the value of Cos A in given figure will be b / c
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