Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

C# C# Objects Methods Using Static Methods

Tomasz Necek
PLUS
Tomasz Necek
Courses Plus Student 7,028 Points
Posted by Tomasz Necek
Tomasz Necek
Courses Plus Student 7,028 Points

Why it's "double" sqrt ?

Why there is Math.sqrt AND Math.pow ?? The formula is : (x2-x1)squared + (y2-y1)squared . So shouldn'e there be only math.pow ? Math.pow(x-x,2)+ Math.pow(y-y,2) ???

2 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

The last step of the Pythagoras theorem is the square root.

Check out what Google itself says or any of the pages it will show links to.

Padraic Histon
Padraic Histon
8,460 Points
Padraic Histon
Padraic Histon
8,460 Points

The formula is to get the square root(Math.Sqrt) of xDiffSquared(Math.Pow(X-x, 2)) + yDiffSquared(Math.Pow(Y-y, 2)) so you will need to use both. Hope this helps.