Question

In a triangle ABC tan (A/2) is​

Answer 1

Answer:

angle B=90

a+b+c=180

a+c=90

a=90-c

divide 2on both sides

a/2=90/2-c/2

applying tan on both sides

tan(a/2)=tan(90/2-a/2)

tan(a/2)=cot(a/2)