How to find Cos 75° without using a calculator, Maths tricks !!!

Описание к видео How to find Cos 75° without using a calculator, Maths tricks !!!

Trigonometry trick
This video fully explains;
- How to find cos 75° without using a calculator,
- How to find cos 75° without using Mathematical tables.

Feel free to comment with areas you would like us to cover.
Meanwhile You can practice on multiple angle formulas(I've compiled a number of useful trigonometric Formulas for you) 👇
   • Basic Maths, Multiple angle Formulas  

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