If the points 2a^{\to}+3b^{\to}-c^{\to} , a^{\to}-2b^{\to}+3c^{\to} , 3a^{\to}+3\lambda^{\to}-2c^{\to} and a^{\to}-6b^{\to}+6c^{\to} are coplanar, then the direction cosines of the vector \lambdai^{\^}-2\lambdaj^{\^}+k^{\^} are

Correct Answer is : 49,−89,19

2/\sqrt{21},{-4}/\sqrt{21},1/\sqrt{21}

- 2/\sqrt{78},{5}/\sqrt{78},7/\sqrt{78}

TS EAMCET 04 May 2019 Shift 1 Solved Paper

Section: Mathematics

Question : 30 of 160

Marks: +1, -0

If the points 2

→

−

→

−2

→

, 3

→

−2

→

and

→

−6

→

are coplanar, then the direction cosines of the vector λ

−2λ

are

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