sin29π/6+cos(-29π/3)+tan(-25π/4)要求是求值
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sin29π/6+cos(-29π/3)+tan(-25π/4)要求是求值
sin29π/6+cos(-29π/3)+tan(-25π/4)
要求是求值
sin29π/6+cos(-29π/3)+tan(-25π/4)要求是求值
sin29π/6+cos(-29π/3)+tan(-25π/4)
=sin(24π/6+5π/6)+cos(-30π/3+π/3)+tan(-24π/4-π/4)
=sin5π/6+cosπ/3-tanπ/4
=1/2+1/2-1
=0
sin29π/6+cos(-29π/3)+tan(-25/4)
sin29π/6+cos(-29π/3)+tan(-25π/4)要求是求值
sin29/6π+COS(-29/3π)+tan(-25/4π)答案拜托了各位
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