AP EAMCET · Maths · Three Dimensional Geometry
If a straight line is equally inclined at an angle \(\theta\) with all the three coordinate axes, then \(\tan \theta=\)
- A \(2 \sqrt{2}\)
- B \(\sqrt{2}\)
- C \(1\)
- D \(1+\sqrt{5}\)
Answer & Solution
Correct Answer
(B) \(\sqrt{2}\)
Step-by-step Solution
Detailed explanation
Since the line is making equal angle \(\theta\) with the 3 co-ordinate axes. Hence \(\alpha=\beta=\gamma=\theta\) \[ \therefore l=m=n=\cos \theta \] We know that, \(l^2+m^2+n^2=1\)…
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