If `A+B+C=pi`, prove that : `sinA cosB cosC +sinB cosC cosA + sinC cosA cosB = sinA sinB sinC`.
Channel: Doubtnut
Date: 2020-04-12

If `A+B+C=pi`, prove that : `sinA cosB cosC +sinB cosC cosA + sinC cosA cosB = sinA sinB sinC`.