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OpenStudy (anonymous):
if sin5x + sin 3x = sin x = 0 then the value of x in the interval 0
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OpenStudy (experimentx):
are you hungry??
OpenStudy (anonymous):
why??
OpenStudy (experimentx):
whats up with pie??
OpenStudy (experimentx):
lol
OpenStudy (anonymous):
sorry
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OpenStudy (anonymous):
now look the ?
OpenStudy (experimentx):
sin 3x + sin 5x = 2 sin 4x cos x = 2 4 sin x cos x cos 2x cos x = sin x 8 cos^x cos 2x = 1 = 0 <-- this doesn't fit
OpenStudy (experimentx):
looks like time to wolfram
OpenStudy (experimentx):
the only solution is zero http://www.wolframalpha.com/input/?i=solve+sin5x+%2B+sin+3x+%3D+sin+x
OpenStudy (experimentx):
anyway what's your answer??
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OpenStudy (anonymous):
60 degree
OpenStudy (experimentx):
http://www.wolframalpha.com/input/?i=sin+%285pi%2F3%29+%2B+sin+%283pi%2F3%29+%3D+sin+%28pi%2F3%29
OpenStudy (experimentx):
must be some error in question http://www.wolframalpha.com/input/?i=sin+%285pi%2F3%29+%2B+sin+%283pi%2F3%29+%3D+0
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