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If the angle between the vectors 2 al...

If the angle between the vectors
` 2 alpha^2hati + 4 alpha hatj + hatk" and " 7 hati - 2 hatj + alpha hatk ` is obtuse then

A

`alpha gt 1/2`

B

`0 lt alpha lt 1/2`

C

`alpha lt 0`

D

`| alpha |lt 1/2`

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The correct Answer is:
B
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TS EAMCET PREVIOUS YEAR PAPERS-TS EAMCET 2019 (4 MAY SHIFT 2)-MATHEMATICS
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