sin(-26/6π)sin(-46/3π)-cos(-37/6π)tan(-55/6π)求值,
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sin(-26/6π)sin(-46/3π)-cos(-37/6π)tan(-55/6π)求值,sin(-26/6π)sin(-46/3π)-cos(-37/6π)tan(-55/6π)求值,sin(
sin(-26/6π)sin(-46/3π)-cos(-37/6π)tan(-55/6π)求值,
sin(-26/6π)sin(-46/3π)-cos(-37/6π)tan(-55/6π)求值,
sin(-26/6π)sin(-46/3π)-cos(-37/6π)tan(-55/6π)求值,
sin(-26/6π)sin(-46/3π)-cos(-37/6π)tan(-55/6π)
=sin(4π-26/6π)sin(16π-46/3π)-cos(6π-37/6π)tan(10π-55/6π)
=sin(-1/3π)sin(2/3π)-cos(-1/6π)tan(5/6π)
=-sin(1/3π)sin(π-1/3π)-cos(1/6π)tan(π-1/6π)
=-sin(1/3π)sin(1/3π)+cos(1/6π)tan(1/6π)
=-√3/2*√3/2+√3/2*√3/3
=-3/4+1/2
=-1/4
[sin(a-6π)cos(7π/2-a)]/[sin(3π+a)+sin(a-π)】=
sin(π+π/6)sin(2π+π/6)sin(3π+π/6).sin(2010π+π/6)
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sin^2(π/3-x)+sin^2(π/6+x)
2sin(α+π/3)=sinα+______
sin(-19π/6)=;sin(-16π/3)=;cos(-79π/6)=;tan(-26π/3)=;sin(15π/4)=;cos(-60°)-sin(-210°)=?
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[Sin(6π+a)Cos(7π-a)]/[Sin(3π+a)+Sin(-π+a)
化简:sin²α+sin²(α+π/3)+sin²(α-π/3)
sin(-26/6π)sin(-46/3π)-cos(-37/6π)tan(-55/6π)求值,
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