12sinx – 9cosx = 7

12sinx – 9cosx = 7
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1 Answer

12*sine(x) -9*kosine(x)=7

bi tri & tri agin, me get x=64.68802369 deg

sine(x)=0.9039932009889 & 12* sine=10.84791841186686

kosine(x)=0.42754683084526884

-9*kosine=-3.847921477607

match...0.84792
by

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