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Question

If the A, B and C of ΔABC satisfy the relation B - A = C - B, then find the measure of B.

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Solution

A+B+C=180

and B-A = C-B

B+ B = A+ C

2B= A+ C

From (i),

B+2B = 1803B=180

B=1803=60

Hence B=60


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