# If ∠A and ∠B are acute angles such that cos A = cos B, then show that ∠A = ∠B.

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If ∠A and ∠B are acute angles such that cos A = cos B, then show that ∠A = ∠B.

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Solution:
In a triangle
Cos A = cos B

AC/AB= BC/AB
⇒AC=BC
⇒Angle A and Angle B

∠A = ∠B

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