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JEE Main 2004 Mathematics question

MathematicsThree Dimensional GeometryJEE Main 2004

A line makes the same angle , with each of the and axis. If the angle , which it makes with -axis, is such that , then equals

Answer: (3)

Solution

Direction cosines satisfy $θ + β + θ = 1 ⇒ 2θ = 1 - β =

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Question ID VK-038457