CBSE 12th Mathematics Delhi Set 1 - 2023 | Three Dimensional Geometry Question 1 | Mathematics

If a line makes angles of $$90^{\circ}, 135^{\circ}$$ and $$45^{\circ}$$ with the $$x, y$$ and $$z$$ axes respectively, then its direction cosines are:

$$0,-\frac{1}{\sqrt{2}}, \frac{1}{\sqrt{2}}$$

$$-\frac{1}{\sqrt{2}}, 0, \frac{1}{\sqrt{2}}$$

$$\frac{1}{\sqrt{2}}, 0,-\frac{1}{\sqrt{2}}$$

$$0, \frac{1}{\sqrt{2}}, \frac{1}{\sqrt{2}}$$

CBSE 12th Mathematics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

The angle between the lines $$2 x=3 y=-z$$ and $$6 x=-y=-4 z$$ is:

$$0^{\circ}$$

$$30^{\circ}$$

$$45^{\circ}$$

$$90^{\circ}$$

Class 12 Subjects

Physics

Electromagnetism

Electrostatics Current Electricity Capacitor Magnetic Effect of Current Magnetic Properties of Matter Electromagnetic Induction Alternating Current Electromagnetic Waves

Optics

Geometrical Optics Wave Optics

Modern Physics

Atoms and Nuclei Dual Nature of Radiation Semiconductor

Chemistry

Physical Chemistry

Solutions Electrochemistry Chemical Kinetics

Inorganic Chemistry

d and f Block Elements Coordination Compounds

Organic Chemistry

Haloalkanes and Haloarenes Alcohols, Phenols and Ethers Aldehydes, Ketones and Carboxylic Acids Amines Biomolecules

Mathematics

Relations and Functions

Relations and Functions Inverse Trigonometric Function

Calculus

Continuity and Differentiability Application of Derivatives Indefinite Integration Definite Integration Application of Integration Differential Equations

Algebra

Matrices Determinants Probability Vector Algebra Three Dimensional Geometry