Question

In ABC ,ac cos B-bc cosA=​

Answer 1

Answer:

(^^^ means SQUARE 2) (1/2=ONE UPON TWO)

Step-by-step explanation:

LHS=AC COS B -BC COS A = A^ - B^

= ac( c^ +a^ -b^) - bc ( b^ + c^ -a^ )

2ca. 2bc

1\2 (c^ +a^ -b^) - 1\2 ( b^ c^ a^ )

1/2 ( c^ + a^ - b^ - b^ - c^ - a^)

1/2 2a^-2b^

1/2= a^-b^

RHS

PLZ FOLLOW AND MARK AS BRAINLIST