If A+B+C=180 then find value of tanA/2×TanB/2
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Since, A+B+C=180
A = 180-B-C
A/2 = 180-B-C/2
A/2 = 90-
A = 180-B-C
A/2 = 180-B-C/2
A/2 = 90-
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