Question

Pls quick
Maths problem

Answer 1

Step-by-step explanation:

A+B+C =180°

B+C =180-A

1/2(B+C) = 180/2 - A/2 [multiple 1/2

on both sides]

B/2+C/2 =90-A/2

tan (B/2+C/2) = tan (90-A/2) [ multiple with tan on both sides]

tan(B/2+C/2) = cot (A/2) proved

Hope it's helpful

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