
Relations and Functions

Inverse Trigonometric Functions

Matrices

Determinants

Continuity and Differentiability

Application of Derivatives

Integrals

Differential Equations

Probability

Vectors

Three  Dimensional Geometry

Application of Integrals

Applications of Calculus in Commerce and Economics

Linear Regression

Linear Programming
Direction Cosines and Ratios
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Q1Marks:2
Answer:

Q2
Find the direction ratios of the line joining the points (3, 2, 9) and (2, 1, 6).
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Q3
Write the condition such that two lines with direction ratios < a_{1}, b_{1}, c_{1} > and < a_{2}, b_{2}, c_{2} > are parallel.
Marks:1Answer:

Q4
Define direction cosines of a line. Also give relation between them.
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Q5
If direction ratios of a line are < 6, 3, 2 >, find its direction cosines.
Marks:1Answer: