CBSE BOARD XII, asked by vishal7237, 1 year ago

how to do it. please tell me fast

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Answered by vijayasriram8

0

Since vectors a and b are parallel dot product of them is 1 .

ā.b bar =|a||b|Cos(a,b)

1=12-∆+27

1=37-∆

∆=36

Hence , value of lamda =36

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