sin(5pai/6)+sin(pai/6)
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sin(5pai/6)+sin(pai/6)
sin(5pai/6)+sin(pai/6)
sin(5pai/6)+sin(pai/6)
sin(5π/6)=sin(π-5π/6)=sin(π/6)=二分之一.,sin(π/6)=1/2
二者之和1
1
sin(5π/6)+sin(π/6)
=sin(π-π/6)+sin(π/6)
=sin(π/6)+sin(π/6)
=1/2+1/2
=1
sin(5pai/6)+sin(pai/6)
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sin(x+pai/6)+sin(x-pai/6)=什么
sin(x+pai/6)+sin(x-pai/6)=
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