San0phi San0phi

28-11-2015
Mathematics

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if theta is an acute angle and sin=1/2 , then cos theta =

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evancohen97 evancohen97

29-11-2015

[tex] \pi /6[/tex] is the only acute angle whose sin = 1/2. Therefore, cos ([tex] \pi /6[/tex]) = [tex] \sqrt{3} /2[/tex]

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