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[" If "(sin(x+y))/(sin(x-y))=(a+b)/(a-b)...

[" If "(sin(x+y))/(sin(x-y))=(a+b)/(a-b)," then "(tan x)/(tan y)" is equal to "],[[" (a) "b/a," (b) "a/b],[" (c) "ab," (d) none of these "]]

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