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MATH / Let u and v be vectors such that ‖u‖=‖v‖=2 and u⋅v=−1. If θ is the angle between the vectors u+v and 2u−v, then find cosθ. · Discussion

Discussing Let u and v be vectors such that ‖u‖=‖v‖=2 and u⋅v=−1. If θ is the angle between the vectors u+v and 2u−v, then find cosθ. · MATH

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