AP and TS EAMCET Engineering Model Paper 17

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Question : 19 of 160

Marks: +1, -0

If a=

^

i

+2

^

j

+3

^

k

, b=−

^

i

+2

^

j

+

^

k

, c=3

^

i

+

^

j

and d is normal to both a,b then (c,d)=

cos−1(
4
√30
)
sin−1(
4
√30
)
cos−1(
2
√30
)
sin−1(
2
√30
)

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