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Mathematics 7 Online
OpenStudy (anonymous):

Which expression is equal to csc x, written in terms of cos x?

OpenStudy (acxbox22):

where are the expressions?

OpenStudy (anonymous):

Its a plus - sign

OpenStudy (amorfide):

you know that \[secx=\frac{ 1 }{ cosx }\] \[cscx=\frac{ 1 }{ sinx }\] you also know that \[sinx=\sqrt{(1-\cos^{2}x)}\] this is derived from \[\sin^{2}x + \cos^{2}x=1\]

OpenStudy (anonymous):

±sqrt(1-cos^2)x

OpenStudy (anonymous):

1/1-cos^2x

OpenStudy (amorfide):

put the square root on the bottom of the fraction and that is correct

OpenStudy (anonymous):

that last one

OpenStudy (anonymous):

lol

OpenStudy (anonymous):

i guess he you talking about the last one

OpenStudy (amorfide):

yes

OpenStudy (amorfide):

\[cscx=\frac{ 1 }{ sinx }=\frac{ 1 }{ \sqrt{1-\cos^{2}x} }\]

OpenStudy (anonymous):

yea

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