Toán Lớp 11: Giải pt sau:
a. 12(sinx-cosx)-sinx=12
b. cosx-sinx+2sinxcosx=0
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Toán Lớp 11: Giải pt sau:
a. 12(sinx-cosx)-sinx=12
b. cosx-sinx+2sinxcosx=0
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