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JEE Advanced Model Paper 6 with solutions for online practice

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Passage-II

−
a
 = a1
^
i
 + b1
^
j
 + c1
^
k
 ,
−
b
 = a2
^
i
 + b2
^
j
 + c2
^
k
 are two vectors then
−
a
.
−
b
 = a1a2 + b1b2 + c1c2 , 1
1
n
 = cos
2kπ
n
 + isin
2kπ
n
 , (k = 0 , 1 , 2 , 3 ..... )
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