The position vectors of the vertices `A, B, C` of a triangle are `vec i-vec j-3vec k, 2vec
2,943 views · Published 13 October 2018 · 5:32 · Indexed 4 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW The position vectors of the vertices `A, B, C` of a triangle are `vec i-vec j-3vec k, 2vec i+vec j-2vec k and -5vec i+2vec j -6vec k` respectively. The length of the bisector AD of the angle BAC where D is on the line segment BC, is
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