求1/sin10°-根号3/cos10°的值(要过程)
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求1/sin10°-根号3/cos10°的值(要过程)
![求1/sin10°-根号3/cos10°的值(要过程)](/uploads/image/z/5929835-59-5.jpg?t=%E6%B1%821%2Fsin10%C2%B0-%E6%A0%B9%E5%8F%B73%2Fcos10%C2%B0%E7%9A%84%E5%80%BC%EF%BC%88%E8%A6%81%E8%BF%87%E7%A8%8B%EF%BC%89)
1/sin10°-(根号3)/cos10°
=(cos10°-(根号3)sin10°)/(sin10°×cos10°)
=2(1/2 cos10°- (根号3)/2 sin10°))/(sin10°×cos10°
=2(sin30°cos10°-cos30°sin10°)/(sin10°×cos10°)
=2sin20°/(sin10°×cos10°)
=4sin20°/(2sin10°×cos10°)
=4sin20°/sin20°
=4
=(cos10°-(根号3)sin10°)/(sin10°×cos10°)
=2(1/2 cos10°- (根号3)/2 sin10°))/(sin10°×cos10°
=2(sin30°cos10°-cos30°sin10°)/(sin10°×cos10°)
=2sin20°/(sin10°×cos10°)
=4sin20°/(2sin10°×cos10°)
=4sin20°/sin20°
=4
求1/sin10°-根号3/cos10°的值(要过程)
求1/sin10°-根号3/cos10°的值.
化简sin10°-根号3*cos10°
化简:1/(sin10°) —根号3/cos10°
1/sin10°-根号3/cos10°=
化简1/sin10°-根号3/cos10°
化简:根号(1+2sin10°cos10°)
化简:(cos10°+根号下3sin10°)/根号下(1-cos80°)=
tan70°(cos10°+根号3sin10°)-2cos40°的值
〔cos40°(cos10°+根号3sin10°)〕/ (2cos^25°-1)
求化简(1)sin10°分之1减去cos10°分之根号3,
化简:(根号1-2sin10°×cos10°)比sin10°-根号1-sin^210°