Online Important Mensuration formula for class 9th and 10th and other

Important formula of mensuration 

Class 9th and 10th

Important formula mean median and mode for class 9th and 10th

Mean  meadin  mode 
And probability

All important Trigonometric formula for class 10th

             Trigonometric ratio formula           

Trigonometric Ratio of complementary angles

Trigonometric identities

 Value of trigonometric ratio