化简1/sin10°-√3/cos10°
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化简1/sin10°-√3/cos10°
化简1/sin10°-√3/cos10°
化简1/sin10°-√3/cos10°
1/sin10-√3/cos10
=(cos10-√3sin10)/sin10cos10
=2(1/2*cos10-√3/2*sin10)/sin10cos10
=2(sin30cos10-cos30sin10)/sin10cos10
=4sin(30-10)/2sin10cos10
=4sin20/sin20
=4
1/sin10°-√3/cos10°
=(cos10°-√3sin10°)/(sin10°×cos10°)
=2(1/2 cos10°- √3/2 sin10°)/(sin10°×cos10°
=2(sin30°cos10°-cos30°sin10°)/(sin10°×cos10°)
=2sin20°/(sin10°×cos10°)
=4sin20°/(2sin10°×cos10°)
=4sin20°/sin20°
=4
化简1/sin10°-√3/cos10°
化简 1/sin10°-√3/cos10°
化简1/sin10°-√3/cos10°,
化简sin10°-根号3*cos10°
sin10°-√3cos10°
化简,1/sin10-√3/cos10
化简1/sin10°-根号3/cos10°
化简:1/(sin10°) —根号3/cos10°
1/sin10° +√3/cos10°=
求值;1/sin10°-√3/cos10°.
求值.1/sin10°-√3/cos10°
(1/sin10)-(√3/cos10)
化简:(cos10°+根号下3sin10°)/根号下(1-cos80°)=分子上的那个 应该是 :(cos10°+√3*sin10°)
三角恒等变换 cos10°-√3sin10°/sin10°cos10°
化简 √(1-2sin10°cos10°) / sin10°-√(1-sin^210°)
1、求证:cos40°(cos10°+√3 sin10°)=cos10°
化简:cos10°+√3*sin10°/√1-cos80°
化简:√(1-2sin10°cos10°)/ {cos10°-√[1-(sin100°)^2]}化简:√(1-2sin10°cos10°)/ {cos10°-√[1-(sin100°)^2]}