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AP EAMCET Engineering 22 Sep 2020 Shift 2 Paper

Section: Mathematics
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Question : 72 of 160
 
Marks: +1, -0
The direction cosines of two lines are (
√3
2
,
1
4
,
√3
4
) and (
−√3
2
,
1
4
,
√3
4
). Then the angle between the lines is equal to __________
Validate
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