KEAM 2011 Math Paper

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Question : 22 of 120

Marks: +1, -0

If the angle between

−

a

and

−

c

is 25°, the angle between

−

b

and

−

c

is 65° and

−

a

+

−

b

=

−

c

, then the angle between

−

a

and

−

b

is

40°
115°
25°
65°
90°

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