若cos(π/6-α)=m,则sin(2/3π-α)的值为

学习 时间:2026-06-05 17:58:03 阅读:3305
若cos(π/6-α)=m,则sin(2/3π-α)的值为

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慈祥的水壶

含蓄的高跟鞋

2026-06-05 17:58:03

sin(2/3π-α)=sin(π/2+π/6-α)=cos(π/6-α)=m

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  • 忧郁的酒窝
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    2026-06-05 17:58:03

    sin(2/3π-α)=sin(π/2+π/6-α)=cos(π/6-α)=m

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