[" In a triangle "ABC,2ac sin((A-B+C))/(2)=],[[" (A) "a^(2)+b^(2)-c^(2)," (B) "c^(2)-a^(2)-b^(2)," (C) "b^(2)-c^(2)-a^(2)]]

In a triangle ABC, 2 ac sin (1/2(A-B + C)) =

In a triangle ABC,2ac sin((1)/(2))(A-B+C)=

In a Delta ABC,2ac sin((A-B+C)/(2)) is equal to (a)a^(2)+b^(2)-c^(2)(b)c^(2)+a^(2)-b^(2)(c)b^(2)-c^(2)-a^(2)(d)c^(2)-a^(2)-b^(2)

ABC is a triangle. sin((B+C)/(2))=

In any triangle ABC b^(2)sin2C+c^(2)sin2B=

In any triangle ABC, prove that: (sin(B-C))/(sin(B+C))=(b^(2)-c^(2))/(a^(2))

In Delta ABC , 2ac sin ""( 1)/(2) (A-B+C)=

In a triangle ABC, prove that :a sin((A)/(2)+B)=(b+c)sin((A)/(2))