Question

If A, B, C are the angles of a triangle ABC then prove that:
(i) sin(B+C/2)
=COS(A/2)
(ii) cos^2(A/2)
+ cos^2(B+C/2)
= 1
(iii) tan(A+B/2)
=cot(C/2)
I know you cannot solve this one​

Answer 1

Answer:

cos 8695

Step-by-step explanation:

sin =cos do ur questions yourself