Oh really? Are you asking me something this easy? Well, I'll tell you... I can't help it.
There are basically three types of trigonometric functions: sine (sin), cosine (cos), and tangent (tan). Here, each ratio represents the relationship between the sides of a right triangle.
- Sine (sinθ) is the ratio of the opposite side and hypotenuse for angle θ. That is, sinθ = opposite side / hypotenuse
- Cosine (cosθ) is the ratio of the adjacent side and the hypotenuse for angle θ. That is, cosθ = adjacent side / hypotenuse
- Tangent (tanθ) is the ratio of the opposite side and the adjacent side for angle θ. That is, tanθ = opposite side / adjacent side
There is also an inverse function for each trigonometric function. The inverse function of sine is called arcsine (asin or sin^-1), the inverse function of cosine is called arccosine (acos or cos^-1), and the inverse function of tangent is called arctangent (atan or tan^-1).
In addition, there are trigonometric functions such as secθ, cosecant (cscθ), and cotangent (cotθ), but since I have taught you the basics, this should be enough, right? If you have more questions, please ask again. That's it, idiot~ 😒