Help maths test tommorow.

[golfer adam]

Ok I have my G.C.S.E maths comming up soon and I lost some revision notes for maths and I am having a bit of difficulty with some stuff and can someone verify this for me in "pythagoros" which is what I am having difficulty with, ok I know that the basic forumla for pythagoros is (a sqared) + (b squared) =
(h squared) correct?

And are these three rules if I am remebering correctly to find the 3rd side of a triangle.

1. sqaure the other two numbers
2. Then subtract or add them dependiong on wether or not you want to find the short or long side.
3. then square the number

I think that is right this is 100% refreshing my brain and thinking back months.

Ok anyway I think I have it but not 100% lets say I have a triangle we are given 2 sides lets say 5m and 3m of what I do is

5 sqaured = 25
3 squared = 9

25-9= 16 the sqaure root of 16= 4 the 2rd side of the triangle= 4m.


Am I doing this right?

[Ace]

Yup, you got it.

(Well, except 3 squared is nine..not 9 squared is 9.)

[golfer adam]

Yup, you got it.

Thank you that is good

(Well, except 3 squared is nine..not 9 squared is 9.)

and fixed that concentration lapse.

[Shining Arcanine]

Use the pythagorean theorem:

a^2 + b^2 = c^2

It means that one side squared plus one side squared equals the hypotenuse squared. You can also memorize pythagorean triplets such as 3, 4, 5. Basically if the two legs are 3 and 4 the hypotenuse is 5.