If a line makes an angle of 60 , 150 , 45 with the positive x, y, z-axis respectively, find its direction cosines.

( frac{1}{2}, frac{ sqrt{3}}{2},- frac{1}{ sqrt{2}} )

( frac{1}{2},- frac{ sqrt{3}}{2}, frac{1}{ sqrt{2}} )

( frac{1}{2},- frac{ sqrt{3}}{2},- frac{1}{ sqrt{2}} )

( frac{1}{2},- frac{ sqrt{3}}{2}, frac{1}{ sqrt{2}} )

( frac{1}{2}, frac{ sqrt{3}}{2},- frac{1}{ sqrt{2}} )

If a line makes an angle of 60 , 150 , 45 with the positive x, y, z-a

1.	If a line makes an angle of 60 , 150 , 45 with the positive x, y, z-axis respectively, find its direction cosines.
A.	( frac{1}{2},- frac{ sqrt{3}}{2}, frac{1}{ sqrt{2}} )
B.	( frac{1}{2},- frac{ sqrt{3}}{2},- frac{1}{ sqrt{2}} )
C.	( frac{1}{2},- frac{ sqrt{3}}{2}, frac{1}{ sqrt{2}} )
D.	( frac{1}{2}, frac{ sqrt{3}}{2},- frac{1}{ sqrt{2}} )
Answer» D. ( frac{1}{2}, frac{ sqrt{3}}{2},- frac{1}{ sqrt{2}} )