If the angle between the vectors \ov { a } = \\lambda \ov { i } - 7 \ov { j } + 3 \ov { k } , \ov { b } = \\lambda \ov { i } + \ov { j } + 2 \\lambda \ov { k } is greater than 90°then \lambda satisfies the inequality ?

AP and TS EAMCET Engineering Model Paper 9

Question : 10 of 160

Marks: +1, -0

If the angle between the vectors a=λi−7j+3k,b=λi+j+2λk is greater than 90°then λ satisfies the inequality ?

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