Question

Fan and medal :)

Answer 1

What is the length of the unknown side of the right triangle?

A right triangle with hypotenuse x and legs 21 and 20

21
29
400
441

Answer 2

Use the pythagorean theorem as before

Answer 3

Now you set it up

Answer 4

can i see the formula again?

Answer 5

\[a^2+b^2=c^2\]

Answer 6

so in the Pythagorean Theorem, \[a ^{2}+b ^{2}=c ^{2}\] where the a and b represent the legs of the triangle, and c is the hypotenuse

Answer 7

21^2+20^2=

Answer 8

correct

Answer 9

Yes good! so you have \[21^2+20^2 = x^2\]

Answer 10

Keep going :)

Answer 11

ok 21*21 right?

Answer 12

yes, do 21*21, and 20*20

Answer 13

then add them up

Answer 14

Yup

Answer 15

to get part of your answer

Answer 16

kk 441+400=

Answer 17

Good, keep going

Answer 18

then, you must find the square root of that "part of the answer"

Answer 19

so find the square root of 841

Answer 20

ok 29? XD

Answer 21

Ok well since you said square root already haha, I will show you why exactly we take the square root, via algebra. when you take the square root we have a positive and negative answer but you don't need to really worry about that, that's the algebra behind it.