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Question : 31 of 160
Marks:
+1,
-0
Solution:
The vector is given as,
=++2 The equation of plane is
râ‹…(++2)=7 The angle made by the vector
(2−+) with
++2 is,
cos‌θ=‌| 2×1+(−1)×1+1×2 |
| √22+12+12√12+12+22 |
cos‌θ=‌=‌ θ=60∘ The angle made by the plane with the vector is
90∘−60∘=30∘
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