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zzr0ck3r Group TitleBest ResponseYou've already chosen the best response.0
there are infinite
 one year ago

helpplease1 Group TitleBest ResponseYou've already chosen the best response.0
how so?
 one year ago

zzr0ck3r Group TitleBest ResponseYou've already chosen the best response.0
cos(x) = 3/11 has infinite solutions
 one year ago

zzr0ck3r Group TitleBest ResponseYou've already chosen the best response.0
forget what I said, they just want the one
 one year ago

zzr0ck3r Group TitleBest ResponseYou've already chosen the best response.0
cos^(1)(3/11) = 105.8 now sin(105.8) = .9622
 one year ago

zzr0ck3r Group TitleBest ResponseYou've already chosen the best response.0
4sqrt(7)/11
 one year ago

helpplease1 Group TitleBest ResponseYou've already chosen the best response.0
thank you!
 one year ago

surjithayer Group TitleBest ResponseYou've already chosen the best response.1
\[put \cos^{1} \left( \frac{ 3 }{ 11 } \right)=x\] \[\cos x=\frac{ 3 }{ 11 }\] hence x lies in second or third quadrant. \[\sin x=\sqrt{1\left( \frac{ 3 }{11 } \right)^{2}}=\sqrt{1\frac{ 9 }{121 }}=\frac{ \sqrt{112} }{11 }\] sin x can be positive or negative according as x lies in second or third quadrant. plug in sin 2x= 2 sin x cos x
 one year ago

helpplease1 Group TitleBest ResponseYou've already chosen the best response.0
wow thank you so much!
 one year ago

zzr0ck3r Group TitleBest ResponseYou've already chosen the best response.0
woops I didn't notice the 2
 one year ago
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