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Sahay Sir > Question Answers > NCERT Exemplar Class 12 > Maths > Chapter 10 - Vector Algebra > 15. If the vertices A, B, C of a triangle ABC are (1, 2, 3), (–1, 0, 0), (0, 1, 2), respectively, then find ∠ABC. [∠ABC is the angle between the vectors BA and BC] .

15. If the vertices A, B, C of a triangle ABC are (1, 2, 3), (–1, 0, 0), (0, 1, 2), respectively, then find ∠ABC. [∠ABC is the angle between the vectors BA and BC] .

0 ) 1 15. If the vertices A 2 3% B C of a triangle ABC are (1 respectively then find ∠ABC. [∠ABC is the angle between the vectors BA and BC] .