Introduction to Trigonometry

Trigonometric Functions

Solutions to Trigonometric Equations

Trigonometry:Review

The area of mathematics relating to the study of trigonometric function in relation to measurement in triangles is known as trigonometry.Note:Hypotenuse is the longest side and always in front of t...

Important Points For Solution of Triangle

⁕ For Oblique Triangle:1. When three angles of a triangle are given, we use Sine Law to find the ratio of the sides of the triangle i.e.                     2. When two angles and one side of a ...

Theorem 1: The Sine Law

⁕ Statement: In any triangle the sides are proportional to the Sine of the opposite angles.In other words, in any ΔABC, Proof:↪ Let ABC be a triangle with a = BC, b = CA and c = AB, then three cas...

Theorem 2: The Sine Law in terms of Circum-Radius R

⁕ Statement: In any ΔABC, where R is the Circum-Radius of ΔABC.Proof:↪ Consider the circum-circle of ΔABC with center O and radius R. Then we can have three possible figures.Where the angle A is a...