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Question : 115 of 150
Marks:
+1,
-0
Solution:
DR's of given lines are
2,5,4 and
1,2,−3.
∴‌‌cos‌θ‌=‌| 2×1+5×2+4×(−3) |
| √22+52+42√12+22+(−3)2 |
‌=‌cos‌θ‌=0⇒‌‌θ‌=‌
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