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Mathematics 9 Online
OpenStudy (thatawayz):

the picture shows a triangular island what expression shows the value of c

OpenStudy (thatawayz):

|dw:1452805851160:dw|

OpenStudy (thatawayz):

are we using the tan function?

OpenStudy (anonymous):

Well we don't really need to. For triangles comprised of 45, 45, and 90 degrees for the angles, there are a special set of rules that make it easier.

OpenStudy (thatawayz):

Wow, i should have saeen that

OpenStudy (anonymous):

So \[\large \sf c=a\sqrt{2}\] and \[\large \sf c=b\sqrt{2}\]

OpenStudy (thatawayz):

okay that makes sense

OpenStudy (thatawayz):

because they are both 45 degrees

OpenStudy (anonymous):

Right, when one of the angles is 45, the other must also be 45

OpenStudy (thatawayz):

to add up and equal 180

OpenStudy (anonymous):

Right, well that's this one solved

OpenStudy (thatawayz):

wait, but how do you exactly find the value of c, the hypoteneuse

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