If – InterviewSolution

1.	If
Answer» Step-by-step explanation: In triangle ABC , Cos A = opposite side / hypo. = AC / AB -1 Cos B = adjacent side / hypo. = BC / AB -2 We gave cos A = cos B Thus by 1 and 2, AC / AB = BC / AB Thus AC . AB = BC . AB AC = BC thus AC and BC are TWO sides of triangle ABC Thus ANGLE A = angle B ( ANGLES opposite to equal sides are equal ) This is the answer . HOPE it helps u ..... Please mark me the BRAINLIEST

If

Answer»

Step-by-step explanation:

In triangle ABC ,

Cos A = opposite side / hypo.

= AC / AB -1

Cos B = adjacent side / hypo.

= BC / AB -2

We gave cos A = cos B

Thus by 1 and 2,

AC / AB = BC / AB

Thus

AC . AB = BC . AB

AC = BC

thus AC and BC are TWO sides of triangle ABC

Thus ANGLE A = angle B

( ANGLES opposite to equal sides are equal )

This is the answer .

HOPE it helps u .....

Please mark me the BRAINLIEST

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