Question

cot(A/2)- tan(A/2) equal to what?​

Answer 1

Answer:

2cotA

Step-by-step explanation:

=Cos(A/2)/sin(A/2)-Sin(A/2)/Cos(A/2)

=Cos^2(A/2)-Sin^2(A/2)/sin(A/2)-cos(A/2)

=CosA/Sin(A/2)-Cos(A/2)

=2 cosA/2 sin(A/2)-cos(A/2)

=2 cosA/sinA

=2 cotA