If θ is an angle given by = ^ 2 z+ ^ 2 + ^ 2 ^ 2 z+ ^ 2 + ^ 2 , where x, , Y are the…
Mathematics · JEE Main · NTA Exams — Three Dimensional Geometry
If θ is an angle given by \(\cos \theta=\frac{\cos ^{2} z+\cos ^{2} \beta+\cos ^{2} \psi}{\sin ^{2} z+\sin ^{2} \beta+\sin ^{2} \gamma}\),
where \(x, \beta, Y\) are the angles made by a line with the positive directions of the axes of reference, then the measure of θ is
- \(\frac{\pi}{4}\)
- \(\frac{\pi}{6}\)
- \(\frac{\pi}{2}\)
- \(\frac{\pi}{3}\)
Answer
(C) 2
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