Three Dimensional Geometry Question 67
If a line makes angles of $ 30^{o} $ and $ 45^{o} $ with x-axis and y-axis, then the angle made by it with $ z- $ axis is
Options:
A) $ 45^{o} $
B) $ 60^{o} $
C) $ 120^{o} $
D) None of these
Show Answer
Answer:
Correct Answer: D
Solution:
$ \cos \gamma =\sqrt{1-\frac{3}{4}-\frac{1}{2}}=\sqrt{\frac{-1}{4}}$ Which is not possible.
BETA
