The angle between two lines x z = y z = z -1 and x-1 z = y-1 1 = z-1 z is
Mathematics · JEE Main · NTA Exams — Three Dimensional Geometry
The angle between two lines \(\frac{x}{z}=\frac{y}{z}=\frac{z}{-1} \text { and } \frac{x-1}{z}=\frac{y-1}{1}=\frac{z-1}{z}\) is
- \(\cos ^{-1}\) \(\left(\frac{4}{9}\right)\)
- \(\cos ^{-1}\)\(\left(\frac{1}{3}\right)\)
- \(\cos ^{-1}\) \(\left(\frac{2}{9}\right)\)
- \(\cos ^{-1}\) \(\left(\frac{5}{9}\right)\)
Answer
(A) ^ -1 ( 4 9 )
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