已知4sinx^2-cosx^2-6sinx+3cosx=0,求(cos2x-cosx^2)/(1-cotx^2)的值

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已知4sinx^2-cosx^2-6sinx+3cosx=0,求(cos2x-cosx^2)/(1-cotx^2)的值已知4sinx^2-cosx^2-6sinx+3cosx=0,求(cos2x-co

已知4sinx^2-cosx^2-6sinx+3cosx=0,求(cos2x-cosx^2)/(1-cotx^2)的值
已知4sinx^2-cosx^2-6sinx+3cosx=0,求(cos2x-cosx^2)/(1-cotx^2)的值

已知4sinx^2-cosx^2-6sinx+3cosx=0,求(cos2x-cosx^2)/(1-cotx^2)的值
采取计算机求解.
4sinx^2-cosx^2-6sinx+3cosx=0
解得:x=0.42314452712305966176816614995526 (rad)
(cos2x-cosx^2)/(1-cotx^2)
解得:0.0710