Vector Algebra Question 113
Question: If $ \vec{\lambda } $ is a unit vector perpendicular to plane of vector a and b and angle between them is q, then a . b will be
[RPET 1985]
Options:
A) $ |\mathbf{a}||\mathbf{b}|,\sin \theta ,\vec{\lambda } $
B) $ |\mathbf{a}||\mathbf{b}|,\cos \theta ,\vec{\lambda } $
C) $ |\mathbf{a}||\mathbf{b}|,\cos \theta , $
D) $ |\mathbf{a}||\mathbf{b}|,\sin \theta , $
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Answer:
Correct Answer: C
Solution:
- It is obvious.
BETA
