Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A vector a has components 
and 
with respect to a rectangular cartesian system. This system is rotatedthrough a certain angle about theorigin in the counter clockwise sense. If, with respect to new system, a has components 
and 
, then avalue of 
is equal to:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
d JEE Main 2021
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