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If angle A and Angle B are acute angle, where CosA=CosB. Show that Angle A= Angle B

Posted by Om Prakash Mishra 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Lucifer ? Morningstar? 5 years, 5 months ago

A/q,CosA=CosB => AC/AB=BC/AB => AC=BC . Here,we know that any triangle whose two adjacent side are equal then it's corresponding angle are also equal. So, angleA=angle B.

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