If A, B and C denote the angles of a triangle, then  `Delta = |(-1,cos C,cos B),(cos C,-1,cos A)
Channel: Doubtnut
Date: 2020-05-17

If A, B and C denote the angles of a triangle, then  `Delta = |(-1,cos C,cos B),(cos C,-1,cos A),(cos B,cos A,-2)|` is independent of