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richyw
 2 years ago
Best ResponseYou've already chosen the best response.0\[\tan\theta=\frac{8}{15}\]\[\theta=\tan^{1}\left(\frac{8}{15}\right)\]\[\cos\left(\frac{\theta}{2}\right)=\cos\left(\frac{\tan^{1}\left(\frac{8}{15}\right)}{2}\right)\]

richyw
 2 years ago
Best ResponseYou've already chosen the best response.0\[=\frac{4}{\sqrt{17}}\]
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