Question

If A, B, C are angles of a triangle, then sin2A - sin2B + sin2C=
2) 4cosAcosBsin
1) 4cosAsinBcosc
4) 4sinAcosBsinc
3) 4sinAcosBcosC​

Answer 1

Answer:

4.4sinAcosBsinc

lf A,B, C are angles of a traingle then side sin2A -sin2B+sin2C,