TRIGONOMETRY

My turn Saida! 
TRIGONOMETRY 
This is the most important and the most used part of maths for navigation, astrology, radar detectors, etc. as well as the most difficult part. There is a simple introduction to trigonometry, simple explanation of trigonometric circle and the most used trigonometric functions. 
So many "trigono" things, but with us... it's just a game. 
Wait for our next upload... Hope you like it!