Problem 2023. Is this triangle right-angled?

Created by Tanya Morton

Solve Later

Given any three positive numbers a, b, c, return true if the triangle with sides a, b and c is right-angled. Otherwise, return false.

Solve

Solution Stats

4295 Solutions
1945 Solvers

Last Solution submitted on Jul 11, 2020

Last 200 Solutions

Problem Comments

3 Comments

3 Comments

Shravankumar P on 18 Jun 2014

among a,b,c., specify the hypotenuse.

Flo Mo on 22 Sep 2016

that's the tricky part here ;) Check all combinations - too bad 'combvec' doesnt work here

Bunny Harlan on 25 Oct 2017

Passes for True, but Failing when I get to false test?? Not sure at the moment what I could be missing.

Solution Comments

Solution 2673632

1 Comment

1 Comment

Umur Ulas Harman on 9 Jul 2020 at 21:17

function flag = isRightAngled(a,b,c)
x=[a b c];
y=sort(x);
flag = y(1)^2+y(2)^2==y(3)^2;
end

Solution 2590144

1 Comment

1 Comment

Piero Cimule on 20 Jun 2020 at 22:41

flag = false;
A = (acos((b^2+c^2-a^2)/(2*b*c)))*180/pi;
B = (acos((a^2+c^2-b^2)/(2*a*c)))*180/pi;
C=180-A-B;
D=[A,B,C];
if any(D==90)
flag = true;
end

Solution 579378

1 Comment

1 Comment

Yona on 4 Mar 2015

why is it correct? only because the test case.

a=100, b=20, c=5 will flag true but it not true

Solution 362995

1 Comment

1 Comment

Jon on 2 Dec 2013

Without using str2num or regexp

Problem Recent Solvers1945

Problem Tags

pythagoras

Problem 2023. Is this triangle right-angled?

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers1945

Suggested Problems

More from this Author10

Problem Tags

Problem 2023. Is this triangle right-angled?

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers1945

Suggested Problems

More from this Author10

Problem Tags

Players