Trigonometry | Part 1 | Math | English Version | Class 9, 11

This math tutorial covers introduction of trigonometry, its history, trigonometric ratio, real life example. It explains how to apply trigonometric ratios using a right triangle. This math video contains useful trigonometry lessons for an amature.

0:00 Introduction of Trigonometry
2:20 Who Invented Trigonometry
3:26 Why Hypotenuse is the highest side?
5:10 Trigonometric Ratios
7:58 Reciprocal Identities
9:00 Real Life example of Trigonometry