Values of Sin 15, cos 15 ,tan 15 ,sin 75, cos 75 ,tan 75 of degrees can be easily find out using the trigonometric identities. Also there can be many ways to find out the values. Lets explore few ways Value of sin 15 degrees Method 1 ( using sin 30) $(\sin \frac {A}{2} + […]
Find the Values of Sin 15, cos 15 ,tan 15 ,sin 75, cos 75 ,tan 75 Read More »
Trigonometric ratios are important module in Maths. Here in this post, I will provide Trigonometric table from 0 to 360 (cos -sin-cot-tan-sec-cosec) and also the easy and simple way to remember it. Trigonometric table for 0 to 90 is given by And this can be easily remember by below method How to easily remember trigonometric
Trigonometric table from 0 to 360 (cos -sin-cot-tan-sec-cosec) Read More »
Quantum number is an important concept for understanding the structure of atom. Here get a free quantum number worksheet on Quantum number to excel in the examination. You may also want to look at our post on Quantum Numbers Chart. Quantum Numbers Practice Problems Worksheet Question 1. What is the total number of orbitals associated
Quantum number worksheet Read More »
Quantum numbers are numerical values that describe the properties of atomic orbitals and the electrons in those orbitals. They are essential for understanding the arrangement of electrons in atoms and the resulting chemical behavior of elements. There are four primary quantum numbers: principal (n), azimuthal (l), magnetic ($m_l$), and spin ($m_s$). Here is the chart
Quantum Numbers Chart Read More »
The electronic configuration of elements is based on the arrangement of electrons in shells or energy levels around the nucleus. Here are the electronic configurations for elements 1 to 30 (Hydrogen to Zinc).It includes the valency of the elements also Remember, the electronic configurations of some elements (like Chromium and Copper) are exceptions to the
Electronic configuration of elements 1 to 30 Read More »
Sound as a Physical Phenomenon We already know from everyday experience that sound is produced by vibrations. When an object vibrates, it sets the surrounding medium into vibration. However, production of sound alone is not sufficient. For us to hear sound, it must travel from the source to the listener. This immediately leads us to
Why Sound Cannot Travel in Vacuum Read More »
Sound Is Observed Only When Something Moves We notice a clear pattern in daily life: However, when these objects are at rest, no sound is heard. A bell kept untouched or a book lying still on a table remains silent.This leads to an important question: why is sound heard only when there is motion? Vibration
How does vibration produce sound? Read More »
JEE Main syllabus has been matched with CBSE syllabus. Here is the current syllabus for 2026 JEE Main Mathematics Syllabus: Sets, Relations, Functions Sets and their representation: Union, intersection, and complement of sets and their algebraic properties; Power set; Relation, Type of relations, equivalence relations, functions; one-one, into and onto functions, the composition of functions.
JEE Main Syllabus for 2026 : Physics, Chemistry & Maths Read More »
