怎样化简函数 cosπ/4cosπ/3-sinπ/4sinπ/3cosπ/4cosπ/3-sinπ/4sinπ/3
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怎样化简函数 cosπ/4cosπ/3-sinπ/4sinπ/3cosπ/4cosπ/3-sinπ/4sinπ/3
怎样化简函数 cosπ/4cosπ/3-sinπ/4sinπ/3
cosπ/4cosπ/3-sinπ/4sinπ/3
怎样化简函数 cosπ/4cosπ/3-sinπ/4sinπ/3cosπ/4cosπ/3-sinπ/4sinπ/3
cosπ/4cosπ/3-sinπ/4sinπ/3
=cos45°cos60°-sin45°sin60°
=(√2/2)*(1/2)- (√2/2)*(√3/2)
=(√2-√6)/4
怎样化简函数 cosπ/4cosπ/3-sinπ/4sinπ/3cosπ/4cosπ/3-sinπ/4sinπ/3
cos(2x-1/3π)+cos(2x+6/π)怎样化成一角一函数
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cos(π/11)cos(2π/11)cos(3π/11)cos(4π/11)cos(5π/11)
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