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Mathematics 17 Online
OpenStudy (anonymous):

Hey, can someone please help me evaluate sin(arccos(-9/sqrt(145)))?!?! :)

OpenStudy (anonymous):

I need help ASAP!!!!!!!!!!!!!!!!!!!!!!!!

OpenStudy (anonymous):

you need the other side of the triangle |dw:1385479446001:dw|

OpenStudy (anonymous):

4rt6706?

OpenStudy (anonymous):

but the answer choices are: 8/sqrt(145) -8/sqrt(145) -sqrt(145)/sqrt(248) sqrt(145)/sqrt(248) How do i get my answer to one of these?

OpenStudy (anonymous):

|dw:1385480066778:dw|

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