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JEE Mains Model Paper 12
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© examsnet.com
Question : 3
Total: 90
A (
z
1
) , B (
z
2
) , C (
z
3
) are the vertices of an equilateral triangle ABC, value of arg
(
z
2
+
z
3
−
2
z
1
z
3
−
z
2
)
is equal to :
π
4
π
2
π
3
π
6
Validate
Solution:
arg
(
z
3
+
2
−
2
z
1
z
3
−
z
2
)
= arg
(
z
2
+
z
3
2
−
z
1
z
3
−
z
2
)
π
2
as AB ⊥ BC
© examsnet.com
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