# 10th Class 6 Basic Trigonometric Functions

Trigonometry is one of the divisions in mathematics which helps in finding the angles and missing sides of a triangle with the help of trigonometric ratios. It is measured in radians or degrees. Trigonometric functions are very important in our studies; these are the building blocks of our studies. These trigonometric functions help us a lot and are very useful.

SinA: The length of the opposite side to A is divided by the length of hypotenuse is known as sinA

sinA=Opposite side to A =Cos(90-theta)=sinA
Hypotenuse

CosA: The length of the adjacent side to A is divided by the length of the hypotenuse is known as cosA.

Hypotenuse

TanA: The length of the opposite side to A is divided by the length of the adjacent side to A is known as tan A

tanA=Opposite side to A =CotA(90-theta)=tanA

CosecA: The length of the hypotenuse is divided by the length of the opposite side to A is known as cosecA

Cosec A= Hypotenuse =Sec(90-theta)=cosecA
Opposite side to A

SecA: The length of the hypotenuse is divided by the length of the adjacent side to A is known as secA

SecA=Hypotenuse =cosec(90-theta)