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0 votes
5.4k views
in Vector algebra by (36.3k points)

If a = j + √3k, b = – j + R3k and c = 2√3k form a triangle, the internal angle of the triangle between a and b is.

1 Answer

+1 vote
by (33.0k points)
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Best answer

We have,

|a| = 2 = |b| and a.b = –1 + 3 = 2

Let θ be the angle between them.

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