Question

What is the length of AB?

22.98 cm
13 cm
18 cm
25.32 cm

Answer 1

? what is AB

Answer 2

this question does not make any sense

Answer 3

i got post the diagram

Answer 4

i dont know how to post the diagram

Answer 5

http://www.purplemath.com/modules/specang.htm

Answer 6

incorporate the special triangles. 45-45-90; 30-6-90 etc

Answer 7

isocellies triangles? i dont know how to spell it

Answer 8

that's irrelevant

Answer 9

go at the link I posted

Answer 10

ik... i just said something so how do i get the length for ab

Answer 11

ook i will

Answer 12

ok i looked at it. . . helped me understand about that formula

Answer 13

got an idea what pythagorean theorem is?

Answer 14

everything tool you need to solve the problem is in that specific web page

Answer 15

yup c2=a2+b2

Answer 16

how do you find a or b?

Answer 17

plug in the numbers?

Answer 18

what if you only have 1 given length?

Answer 19

please comprehend everything in that webpage. it will help you A LOT in the future

Answer 20

ok i will . . . i see that page is very helpful i will add it to my bookmarks

Answer 21

so what you mean by 1 given length

Answer 22

that's when the "neatness" of the special triangle comes in. in a 45-45-90 right triangle. the value of the opposite side IS EQUAL to the value of the the adjacent side

Answer 23

if you are looking at line PB, the triangle there has 45 degree... so follow the logic that is involved in a 45 degree angle that I just told you

Answer 24

yeah i see what your talking about

Answer 25

the opposite side given: 8cm. therefore the adjacent side is _______

Answer 26

okay now look at the other special triangle and observe the relationship of the values of a b and c

Answer 27

the special triangle your talking about is the 30 60 90 triangle right?

Answer 28

yes, that is called the special triangle. so every time you see a right triangle that should be the first thing that pops up in your mind. the pythagorean theorem is always a given

Answer 29

good luck

Answer 30

yeah i understand that now thanks B-)

Answer 31

so just to make sure when i come up with the answer you check if im right?

Answer 32

@helpme1.2 @jigglypuff314