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 one year ago
cos(arctan(sqrt3/7))??
http://media.education2020.com/evresources/64907060000_files/i0200000.jpg
 one year ago
cos(arctan(sqrt3/7))?? http://media.education2020.com/evresources/64907060000_files/i0200000.jpg

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hkmiu
 one year ago
Best ResponseYou've already chosen the best response.0\[\cos(\arctan (\frac{ \sqrt{3} }{ 7 })) \]

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1Let the inside be called a. arctan(sqrt(3)/7)=a then use the fact that tan is the inverse of arctan to rewrite that as tan(a)=sqrt(3)/7 Draw a right triangle and put these measurements in their proper place. You should see that one measurement for one leg is missing. You can use the Pythagorean thm for that. Then find cos(a) and that is your answer.

hkmiu
 one year ago
Best ResponseYou've already chosen the best response.0Oh okay, thank you !!! :D

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1Ok. Well if you have anymore questions here on this problem don't be afraid to ask.
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