Trigonometric function sin8x+7sin6x+18sin4x+12sin2x)/(sin7x+6sin5x+12sin3x) is equal to a.2cosx b.cosx c.2sinx d.sinx

Trigonometric function

sin8x+7sin6x+18sin4x+12sin2x)/(sin7x+6sin5x+12sin3x) is equal to
a.2cosx
b.cosx
c.2sinx
d.sinx
                   

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