SOLUTION: if cot(x+y) = 0, then sin( x+2y) =.... [ sin(x) , sin(y) , cos(2y) , cos(x) ]

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Question 1191907: if cot(x+y) = 0, then sin( x+2y) =....
[ sin(x) , sin(y) , cos(2y) , cos(x) ]
Answer by ikleyn(52776) About Me  (Show Source):
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if cot(x+y) = 0, then sin( x+2y) =....
[ sin(x) , sin(y) , cos(2y) , cos(x) ]
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. . . then sin(x+2y) is no one of the listed options.