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Grade 12Trigonometry

The direction cosines of the line joining the points A(-6,5,-4),B(-5,2,-4) is ?

Profile image of Srushti
9 Years agoGrade 12
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1 Answer

Profile image of Nishant Vora
9 Years ago
DR are given by\vec{AB}= (1,-3,0)

hence DC are given by\hat{AB}=(-1 / \sqrt{10}, 3/ \sqrt{10}, 0)

Thanks

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