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Maths Class 11 Chapter 3. Trigonometric
Functions
Angle
When a ray OA starting from its initial position OA rotates about its end point 0 and takes the
final position OB, we say that angle
AOB (written as AOB) has been formed. The amount of rotatio

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Math Class 11 Chapter 1 and 2 Sets and relations and functions
Set
Set is a collection of well defined objects which are distinct from each other. Sets are usually
denoted by capital letters A, B,C, and elements are usually denoted by small letters

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Maths Class 11 Chapter 5 Part -1 Complex Numbers
Imaginary Quantity
The square root of a negative real number is called an imaginary quantity or imaginary number.
e.g., -3, -7/2
The quantity -1 is an imaginary number, denoted by i, called iota.
Int

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Maths Class 11 Chapter 5 Part -1 Quadratic equations
1. Real Polynomial: Let a0, a1, a2, , an be real numbers and x is a real variable. Then, f(x) =
a0 + a1x + a2x2 + + anxn is called a real polynomial of real variable x with real coefficients.
2.

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Class 11 Maths Chapter 14. Mathematical Reasoning
Logic
Logic is the subject that deals with the method of reasoning. It provides us rules for
determining the validity of a given argument in proving theorem.
Statement (Proposition)
A statement is a