Swiftui swift internal skill how to perform automatic trigonometric function calculation in swift

No one likes math , This is the truth . So what can we do to completely eliminate it from our lives ？ No , This is not a robot . Maybe one day I will write these . Who knows ！ But for now , You will have to solve functions and formulas .

Are you ready to leave the past calculator ？ Let's see how to simplify trigonometric functions for our project .

principle

For those who are not familiar with trigonometry , Let me quote myself from another tutorial , Like an absolutely self-centered nerd （ Although it's actually just laziness ）：

Basically , In a right triangle , You can calculate the length of the triangle side , The premise is that you at least ：

• The degree of an angle （ In our case , The one I highlighted in yellow ）,
• And one of the three sides of size （ In our case , Blue dotted line ）.
  As you can see from the diagram , This logic can be applied to an invisible circle around our middle button , By using the formula in the figure x and y Value to define three buttons （ green ） The location of .

This theory is useful for any structure involving circles . for example , In that tutorial , I'm explaining how to determine the position of the green dot in the picture from the center of the circle , So that I can treat them as three UIButtons The center of the position .

Trigonometry tells us ：

• sin θ = Opposite side / hypotenuse
• cos θ = adjacent / hypotenuse
• tan θ = Opposite side / Adjacent edge

If you look at the picture above ,“θ” It's a yellow angle ,“x” Is an adjacent edge &