KEAM 2016 Math Paper

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Question : 71 of 120

Marks: +1, -0

If

→

a

.

→

b

=0‌and‌ ‌

→

a

+

→

b

and makes an angle of 60° with

→

b

‌then‌ |

→

a

| is equal to

0
1
√3
|
→
b
|
1
|
→
b
|
|
→
b
|
√3|
→
b
|

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