若cos(π/4+x)=3/5 17π/12
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cos(π/4+x)=3/5,17π/12
cos(π/4+X)=3/5,17π/12
cos(π/4+x)=3/5,17π/12
cos(π/4+x)=3/5,17π/12
cos(π/4+x)=3/5,17/12π
cos(π/4+x)=3/5,17π/12
cos(π/4+x)=3/5,17π/12
cos(π/4+x)=3/5,-17π/12
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若cosx=2/3,x是第四象限角,求sin(x-2π)+sin(-x-3π)cos(x-3π)/cos(π-x)-cos(-π-x)cos(x-4π)的值
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若cos(π/4+x)=3/5 17π/12
若cos(π/4+x)=3/5,17/12π
若cos(π/4+x)=3/5,17π/12
若cos(π/4+x)=3/5,17π/12
若cos(π/4+x)=3/5 17π/12
若cos(π/4+x)=3/5 17π/12
若cos(π/4+x)=3/5,17/12π