# If <A and <B are acute angles such that cos A = cos B, Then show that <A = <B. Best Answer will be marked.

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by ayeshaoct

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by ayeshaoct

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so just like that if cos A= cos B the A=B because after the putting the values of a and b in co u get the equal answer the it means that a and b are the numbers

The Brainliest Answer!

As both angle A and angle B are acute, only angle C can be 90 degree (since all calculations in trigonometry are done with a right angled triangle.

Given, cos A = cos B

or, AC/AB = CB/AB

or, AC = CB

Therefore,

Angle A = Angle B(Proved)