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Mathematics 21 Online
OpenStudy (anonymous):

Find x and y.

OpenStudy (anonymous):

So again i know this is a 45-90 special right triangle i just need help setting it up.

OpenStudy (anonymous):

|dw:1379819772764:dw|

OpenStudy (anonymous):

ok so what do you not understand?

OpenStudy (anonymous):

just how to set the figure up to find x

OpenStudy (anonymous):

did you read your lesson

OpenStudy (anonymous):

yeah, i know how to do everything else i just forgot how to set it up.

OpenStudy (anonymous):

ok so what do you mean by everything else?

OpenStudy (anonymous):

i know how to solve for x once i have the triangle set up. i just don't remember the equation for a 45-90 triangle.

OpenStudy (anonymous):

There isn't enough information to know what \(x\) is. You need the measure of one side at least.

OpenStudy (anonymous):

you need some other number

OpenStudy (anonymous):

|dw:1379820241728:dw|

OpenStudy (anonymous):

if you know the other leg, then your \(x\) is the same if you know the hypotenuse, divide it by \(\sqrt2\)

OpenStudy (anonymous):

|dw:1379820301998:dw| so then what about this?

OpenStudy (anonymous):

girl this is too hard! ask your teacher for help

OpenStudy (anonymous):

the triangle on the right gives you \(x\)

OpenStudy (anonymous):

|dw:1379820468969:dw|

OpenStudy (anonymous):

in a 30 - 60 - 90 triangle, the short leg is half the hypotenuse

OpenStudy (anonymous):

now we can start filling stuff in

OpenStudy (anonymous):

|dw:1379820578839:dw|

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