A vector a of magnitude 14 has direction ratios . Find the projection of the vector a on î.

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TextDirection Cosines and Direction Ratios of a VectorProjection of a Vector on Another Vector

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Assertion (A): If a line makes angles α, β, γ with positive direction of the coordinate axes, then sin² α + sin² β + sin² γ = 2. Reason (R): The sum of squares of the direction cosines of a line is 1.

Assertion-ReasonDirection Cosines and Direction Ratios of a VectorDirection Cosines of a Line

a→ and b→ are two non-zero vectors such that the projection of a→ on b→ is 0. The angle between a→ and b→ is :

MCQ (Single)