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If tan((2pi)/3-x)= sin(2pi/3-sin2x)/(cos...

If `tan((2pi)/3-x)= sin(2pi/3-sin2x)/(cos(2pi/3-cos2x)` where `0< x < pi` then two possible values of `x` are `lamdapi/12` and `mupi/12 (lamda < mu)` then `(lamda+mu)/4` is equal to

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