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Mathematics 7 Online
OpenStudy (happpily):

TRIGONOMETRY HELP PLS?http://prntscr.com/7eql5j

geerky42 (geerky42):

What have you tried? You can find the length of XY by using Pythagorean Theorem.

OpenStudy (happpily):

Haven't tried if i'm honestly i absolutely know nothing not even how to start ! o.o

geerky42 (geerky42):

Well, you can start by finding length of XY.

geerky42 (geerky42):

You know Pythagorean Theorem, right?

geerky42 (geerky42):

\(\Large a^2+b^2 = c^2\)

OpenStudy (happpily):

yes !

geerky42 (geerky42):

OK what is XY?

OpenStudy (happpily):

(25)(15)

geerky42 (geerky42):

\(25\times15\)? How?

OpenStudy (happpily):

because theyre the only number on the triangle?

geerky42 (geerky42):

But you don't multiply them. You have one leg of 15 and one hypotenuse of 25. So you would have \(15^2 + b^2 = 25^2\). You need to solve for b.

OpenStudy (happpily):

ohhh okay!

OpenStudy (happpily):

i got 20?

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