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.

cosA=Adjacent side to A =SinA(90-theta)=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

Adjacent side to A

**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)

Adjacent side to A

**CotA:** The length of adjacent side to A is divided by the length of opposite side to A is known as cot A

Cot=Adjacent side to A =Tan(90-theta)=cotA

Opposite side to A

**Conclusion: **

The above mentioned are the 6 basic **trigonometric functions** which are very useful for higher studies and are very simple and easy to learn. In **10th class or in higher studies it’s very important** to learn and there are many more trigonometric functions to learn.