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Formulas for Lines in 3 D Geometry-Part 1-Mathematics-Class 12

You are introduced to the very basic formula of direction cosines and direction ratios. You will also learn how to calculate the direction cosines given the direction ratios.

This is part 1 of my formulas on lines in 3 dimensional geometry. A useful tool for mathematics students of class 12. I am a math educator and I love to write and explain math to you.

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