JEE Main 2020 — Mathematics Vectors & 3D Geometry
Let a,b,c∈R be such that a2+b2+c2=1. If acosθ=bcos(θ+32π)=ccos(θ+34π),where θ=9π, then the angle between the vectors ai^+bj^+ck^ and bi^+cj^+ak^ is:
Held on 3 Sept 2020 · Verified 6 Jul 2026.
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32π
2π
9π
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