The direction cosines of vector \overrightarrow{a}=-2 \stackrel{\^}{i}+\stackrel{\^}{j}-\stackrel{\^}{k} are

Correct Answer is : (−2√6,1√6,−1√6)

( {2}/{\sqrt{6}}, {1}/{\sqrt{6}}, {1}/{\sqrt{6}})

( {-2}/{\sqrt{6}}, {1}/{\sqrt{6}}, {-1}/{\sqrt{6}})

( {-2}/{\sqrt{6}}, {-1}/{\sqrt{6}}, {-1}/{\sqrt{6}})

( {-2}/{\sqrt{6}}, {1}/{\sqrt{6}}, {1}/{\sqrt{6}})

( {-2}/{\sqrt{6}}, {-1}/{\sqrt{6}}, {1}/{\sqrt{6}})

KEAM 2023 Math Solved Paper

Question : 66 of 120

Marks: +1, -0

The direction cosines of vector

→

=−2

−

are

(‌
2
√6
,‌
1
√6
,‌
1
√6
)
(‌
−2
√6
,‌
1
√6
,‌
−1
√6
)
(‌
−2
√6
,‌
−1
√6
,‌
−1
√6
)
(‌
−2
√6
,‌
1
√6
,‌
1
√6
)
(‌
−2
√6
,‌
−1
√6
,‌
1
√6
)

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