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NIMCET 2015 Question Paper with solutions

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Question : 3

Total: 120

If

are the position vectors of the verticesA, B, C of triangle ABC, then the area of the triangleABC is :

1
2
|
→
a
×
→
b
+
→
b
×
→
c
+
→
c
×
→
a
|
|
→
a
×
→
b
|
1
2
|
→
a
×
→
b
−
→
b
×
→
c
−
→
c
×
→
a
|
|
→
a
×(
→
b
×
→
c
)|

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