Question

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

Answer 1

Explanation:

let magnitude of vector given be a

cos 30 : 1/√3

cos 60:√ 3

cos 90:0

therefore,

the vector can be written as

1/√3î + √3 j^