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OpenStudy (a1234):
Use an inverse function to write theta as a function of x. I'll draw...
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OpenStudy (a1234):
|dw:1443629711573:dw| Is it theta = arccosx/3?
Nnesha (nnesha):
cos theta = what ?
OpenStudy (anonymous):
\[\cos(\theta)=\frac{x}{3}\]\[\theta=\cos^{-1}(\frac{x}{3})\]
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