JEE Mains Model Paper 25

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Question : 86 of 90

Marks: +1, -0

The unit vectors

−

a

and

−

b

are perpendicular. Suppose that a unit vector

−

c

which is equal to α

−

a

+ β

−

b

+ γ(

−

a

×

−

b

) and is equally inclined to

−

a

and

−

b

. Then

α = β
α = 2β
α =
β
2
β2 = −
1+α
2

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