If a^{\to},b^{\to},c^{\to} are unit vectors such that |a^{\to}+2b^{\to}+3c^{\to}| = \sqrt{3+2\sqrt2} , angle between a^{\to} and b^{\to} is α , angle between a^{\to} and c^{\to} is β and angle between b^{\to} and c^{\to} is γ , then

4 cos α + 6 cos β = 2\sqrt2 - 12 - 11 cos γ

4 cos α + 6 cos β = 2\sqrt2 - 11 - 12 cos γ

If γ ∊ [\pi/2,{2\pi}/3] then maximum value of 4 cos α + 6 cps β is 2\sqrt2 - 5

If γ ∊ [\pi/2,{2\pi}/3] then maximum value of 4 cos α + 6 cps β is 2\sqrt2 + 5

JEE Advanced Model Paper 10 with solutions for online practice

Question : 46 of 54

Marks: +1, -0

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are unit vectors such that |

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| = √3+2√2 , angle between

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and

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is α , angle between

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and

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is β and angle between

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and

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is γ , then

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