The probabilities of two students A and B coming

Question 1:- The probabilities of two students A and B coming to the school in time are 3/7 and 5/7 respectively. Assuming that the events, ‘A coming in time’ and ‘B coming in time’ are independent, find the probability of only one of them coming to the school in time.            … Read more

Trigonometry formulae for class 11

The word ‘trigonometry’ is derived from the Greek words ‘trigon’ and ‘metron’ and it means ‘measuring the sides of a triangle’. The subject was originally developed to solve geometric problems involving triangles. It was studied by sea captains for navigation, surveyor to map out the new lands, by engineers and others(Trigonometry formulae for class 11) … Read more

Trigonometric formulae for class 10

These are some of the basic trigonometric formulas that you will come across in class 10. They are fundamental for solving trigonometry problems and understanding the relationships between trigonometric functions.(Trigonometric formulae for class 10) Formulae for Trigonometric Ratio Perpendicular =   P Base               =   B Hypotenuse   =   H (i) (ii) … Read more