Question:medium

A line makes the same angle θ with each of the X and Z-axes. If the angle β, which it makes with Y-axis, is such that sin²β=3sin²θ, then cos²θ equals

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Use direction cosine identity l²+m²+n²=1.

Updated On: Mar 20, 2026

\(2/5\)
\(1/5\)
\(3/5\)
2/3

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The Correct Option is C

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