If a line makes angles x, , Y with the positive direction of x, y and z-axes…
Mathematics · JEE Main · NTA Exams — Three Dimensional Geometry
If a line makes angles \(x, \beta, Y\) with the positive direction of x, y and z-axes respectively. Then \(\cos ^{2} x+\cos ^{2} \beta+\cos ^{2} \gamma\) is equal to:
- \(\frac{1}{2}\)
- \(-\frac{1}{2}\)
- - 1
- 1
Answer
(D) 1
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