+0  
 
0
56
2
avatar

how do i find a missing side of a right triangle?

Guest Feb 28, 2017
Sort: 

2+0 Answers

 #1
avatar+76821 
0

If you want the hypotenuse....  √ [ (leg 1)^2 + (leg 2)^2 ]

 

If you want a leg  .....   √ [ ( hypotenuse)^2 - (leg)^2 ]

 

 

cool cool cool

CPhill  Feb 28, 2017
 #2
avatar
0

Ok, I am going ot give you a simple answer, the pythagorean theorem. Which is a+ b= c2

So if you have a normal right triangle, like this one, you'd use the theorem. First you'd do 52 + b2 = 122.

The reason we don't know what b squared is because that is what we're finding. 52 = 25 and 122 = 144 so fill in the equation. 25 + b2 = 144. Now subtract 25 from both sides. Now you get b2 = 119. Now you have to remove the squared in b2. Since you have to remove the power, you have to find the square root of both sides. So in b2 = 119, do the square root to both sides. So now you get your answer as b = 10.908. If you just want the longest side(hypotenuse), you do a+ b2  = c2. I am going to pick random numbers, let's say a is 5 and b is 6. So, 52 + 62 = c2. 5 squared is 25 and 6 squared is 36. So 25 + 36 = c2. 61 = c2. So now you have to find the square root of both sides. The answer is 7.81. 

Guest Feb 28, 2017

6 Online Users

avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details