# Basic Trigonometric Formulas

based on right-angled triangle their 6 ratios in Trigonometry, this are basically called Trigonometric functions .The six trigonometric functions are sine, cosine, secant, co-secant, tangent and co-tangent.The value of each function can be find out using below trigonometric formulas

Here are the definition of each of this trigonometric formulas

```
trigonometric formulas

sin θ = opposite Side/hypotenuse where θ is the angle

cos θ = adjacent Side/hypotenuse  where θ is the angle

tan θ = opposite Side/adjacent Side  where θ is the angle

sec θ = hypotenuse/adjacent Side   where θ is the angle

cosec θ = hypotenuse/opposite Side  where θ is the angle

cot θ = adjacent Side/opposite Side  where θ is the angle

```

As per the above table definition we can relate each of the formula in below ways

```cosec θ = 1/sin θ    hint :  1/opposite Side/hypotenuse  = hypotenuse/opposite

sec θ = 1/cos θ      hint :  1/adjacent Side/hypotenuse   = hypotenuse/adjacent Side

cot θ = 1/tan θ      hint :  1/opposite Side/adjacent   = adjacent Side/opposite Side

sin θ = 1/cosec θ    hint :  1/hypotenuse/opposite Side   = opposite Side/hypotenuse