TRIGONOMERTRY: Basic Concepts, Formulae & Solved Examples (Part 1)

Trigonometry Angles: The amount of turn between two straight lines that have a common point is called angles. Generally, angles are measured in degree or radian 1 degree = 60 minutes 1 minutes = 60 seconds Suppose an angle is given as 45°23’53’’, we read it as 45 degrees 23 minutes and 53 seconds. The basics of trigonometry start with right angle triangle. It is given as below : Trigonometric ratios sinθ = P/H                   cosecθ = H/P cosθ = B/H                   secθ = H-P tanθ = P/B                    cotθ = B/P   Let’s see the sign of trigonometric ratios in various…

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