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TN XII Math
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Vector Algebra
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Q)
If
ˆ
a
and
ˆ
b
are unit vectors inclined at an angle
θ
,than prove that tan
θ
2
=
|
ˆ
a
−
ˆ
b
|
|
ˆ
a
+
ˆ
b
|
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