Question

If angleA and angleB are acute angles such that cosA= cosB, then show that angleA = angleB.

Please write the correct answers only.​

Answer 1

Step-by-step explanation:

In the given question Angle A and Angle B are

acute àngles

Therefore triangle ABC is right angled at C

cos A =cosB. (given)

AC/AB= BC/AB

AC=BC. (AB IS CANCELLED BOTH SIDES)

SINCE THE OPPOSITE SIDES ARE EQUAL THE OPPOSITE ANGLES ARE ALSO EQUAL

THEREFORE,

ANGLE A=ANGLE B

HENCE PROVED

Answer 2

Answer:

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