KEAM 2014 Math Paper

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Question : 2 of 120

Marks: +1, -0

If

→

a

.

→

b

=0 and

→

a

+

→

b

makes an angle 60°with

→

a

, then

|
→
a
|=2|
→
b
|
2|
→
a
|=|
→
b
|
|
→
a
|=√3|
→
b
|
|
→
a
|=|
→
b
|
√3|
→
a
|=|
→
b
|

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