Question: In the triangle ABC side b = 9, side c = 9, and side a = 10, what is the value of the cos(A)?

In the triangle ABC side b = 9, side c = 9,

In the triangle ABC side b = 9, side c = 9, and side a = 10, what is the value of the cos(A)? Round your answer to the nearest hundr (picture of triangle is purely for labeling, use angles and side lengths specified in the problem)

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