Question

A unit radial vector î makes angles of a = 30°relative to the x-axis, B = 60° relative to they-axis, and y = 90° relative to the z-axis. Thevector î can be written as :​

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Answer 1

unit vector has magnitude 1.

and while doing components jis side angle ho udhar cos ka comp. ata h and opp side sin. but sin 30= cos 60....