Question

Refer to triangle ABC. Find the length of side AB. c = 30, b = 17, find a.

Answer 1

do you know the Pythagorean theorem ?

Answer 2

yes\

Answer 3

you would use that to figure out the side length, do you need help setting it up or anything?

Answer 4

yeah i would like some help with that :)

Answer 5

do you know the equation? for Pythagorean theorem?

Answer 6

a^2 + b^2 = c^2

Answer 7

wait a second, those are angle measurements arent they?

Answer 8

sorry, I thought they were side lengths,

Answer 9

they are side lengths

Answer 10

oh my goodness, okay, sorry, I confused myself

Answer 11

ha ha its ok :)

Answer 12

let me re draw it, I drew it wrong in the first place

Answer 13

so using A2 + B2= C2 (idk how to type the squared thingy) lets plug in the numbers

Answer 14

ok so a^2 + 17^2 = 30^2?

Answer 15

yes, but to make it easier to solve, were gonna flip it so A2= B2+ C2 (because we're trying to find A)

Answer 16

ok

Answer 17

so then we simplify: 17 squared (17*17) = _____

Answer 18

289

Answer 19

I got that too, and then 30 squared (30*30) =___

Answer 20

900, sorry if im slow to respond open study is being really laggy for me.

Answer 21

yeah, I think its because its a live site, and theres tons of people on. But I got 900 too. So then we add the two numbers together

Answer 22

1,189

Answer 23

yep, so then we're left with A2=1189
next, we square root 1189, this will cancel out A2, so all we're left with is A

Answer 24

34.5 (rounded)

Answer 25

yep, you got it

Answer 26

awesome!!