Question

4x+3y+24=0
7x-2y+13=0​

Answer 1

Answer:

sinS+sin(S-A)+sin(S-B)-sin(S-C)

{sinS-sin(S-C)}+{sin(S-A)+sin(S-B)}

2cos(2S-C)/2sin(C/2)+2sin(C/2)cos(B-A)/2

=2sinC/2[cos(A+B)/2 +cos(B-A)/2]

=2sinC/2 .[2cos(B/2)cos(A/2)]

=4cos(A/2)cos(B/2)sin(C/2)

THANKS  

0 AKA ROHITH

Step-by-step explanation: