Three vectors `vec(P) , vec(Q)` and `vec( R)` are such that `|vec(P)| , |vec(Q )|, |vec(R )|

Three vectors `vec(P) , vec(Q)` and `vec( R)` are such that `|vec(P)| , |vec(Q )|, |vec(R )| = sqrt(2) |vec(P)|` and `vec(P) + vec(Q) + vec(R ) = 0`. The angle between `vec(P)` and `vec(Q) , vec(Q)` and `vec(R )` and `vec(P)` and `vec(R )`are

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Sir cos teetha =minus 1by root 2 kaise aaya hai

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Magic... Eh eh hehe

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Thank you...

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thax sir

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