化简sin10°×(根号3+tan20°)?
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sin10°×(根号3+tan20°)
=sin10*(根号3*cos20+sin20)/cos20
=sin10*2*(根逗桥晌号3/消肆2*cos20+sin20*1/2)/cos20
=2sin10*(cos30cos20+sin20sin30)/cos20
=2sin10*cos(30-20)/cos20
=2sin10cos10/cos20
=sin20/cos20=tan20,2,sin10°×(√山锋3+tan20°)
=sin10°(√3cos20°+sin20°)/cos20°
=2sin10°cos(30°-20°)/cos20°
=tan20°.,1,
=sin10*(根号3*cos20+sin20)/cos20
=sin10*2*(根逗桥晌号3/消肆2*cos20+sin20*1/2)/cos20
=2sin10*(cos30cos20+sin20sin30)/cos20
=2sin10*cos(30-20)/cos20
=2sin10cos10/cos20
=sin20/cos20=tan20,2,sin10°×(√山锋3+tan20°)
=sin10°(√3cos20°+sin20°)/cos20°
=2sin10°cos(30°-20°)/cos20°
=tan20°.,1,
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