Sometimes in mathematics we like to use letters to represent numbers. The ‘value’ of these letters can change according to certain rules or conditions we are given – hence we can call them variables.

Also Read: Math Riddles: Test Your Brain Power, Solve These Missing Numbers Puzzles Also Read: Math Riddles: Solve this Circle, Triangle, Star, Square riddle, Test Your IQ Roopashree Sharma is a ...

As the tangent is a straight line, the equation of the tangent will be of the form \(y = mx + c\). We can use perpendicular gradients to find the value of \(m\), then use the coordinates of P to find ...