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jdoe0001
 6 months ago
Best ResponseYou've already chosen the best response.0\(\large \begin{array}{ccllll} (&12&,&5)\\ &\uparrow &&\uparrow \\ &x&&y \end{array}\) thus dw:1408396503470:dw so... what's the hypotenuse? notice is a right triangle, so you can use the pythagorean theorem to get that keep in mind your SOH CAH TOA ,thus \(\bf cos(\theta)=\cfrac{adjacent\ side}{hypotenuse}\)

robtobey
 6 months ago
Best ResponseYou've already chosen the best response.1\[\cos \left(\tan ^{1}\left(\frac{5}{12}\right)\right)=\frac{12}{13} \]
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