Q. 45.0( 1 Vote )

# A vector is inclined at equal acute angles to x – axis, y – axis, and z - axis. If units, find Here, α = β = γ

cosα = cosβ = cosγ

l = m = n = p(say)

Now, we know that -

l2 + m2 + n2 = 1

p2 + p2 + p2 = 1

3p2 = 1 the direction cosines of r are - r = |r|( l î + m ĵ + n k̂)  Now, multiplying and dividing it by √3 r = ±2√ 3 ( î + ĵ + k̂)

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