求值：1/sin10°-根号3/cos10°=

来源：学生作业学帮网编辑：学帮网时间：2024/05/15 16:05:47

1/sin10°-根号3/cos10°
=(cos10-根3*sin10)/(sin10*cos10)
=4*(sin150*cos10+sin10*cos150)/sin20
=4*sin160/sin20
=4

您好
1/sin10°-根号3/cos10°
=(cos10-根3*sin10)/(sin10*cos10)
=4*(sin150*cos10+sin10*cos150)/sin20
=4*sin160/sin20
=4
希望能帮到您
祝您学习进步

1/sin10°-根号3/cos10°
=(cos10-根3*sin10)/(sin10*cos10)
=4*(sin150*cos10+sin10*cos150)/sin20
=4*sin160/sin20
=4

原式=(cos10-根号3 sin10)/(sin10cos10)
=2(1/2 *cos10-根号3 /2 sin10)/(sin10cos10)
=2(sin30*cos10-cos30 sin10)/(sin10cos10)
=2(sin(30-10))/(sin10cos10)
=2sin20/(sin10cos10)
=4

求值：1/sin10°-根号3/sin80° 求值：1/sin10°-根号3/cos10°= 求值 1/sin10°-根号3/cos10° 求值:【2sin50°+sin10°(1+根号3tan10°)】根号2sin280° 求值:sin10°-根号3乘cos10°/cos40° 求值 (cos10°+根号3sin10°)/cos50° 求值【2sin50+sin10(1+根号3*tan10)]*根号下2*sin80, 求值:1/sin10°-√3/sin80° 求值；1/sin10°-√3/cos10°. 求值.1/sin10°-√3/cos10° 求值：sin10°(1+√3cot20°）求值:1/sin10－√3/cos10 化简求值 tan70°cos10°+根号3sin10°tan70°-2cos40° 求值cos10°/tan20°+根号3sin10°tan70°-2cos40° 求值:cos20°/sin20°×根号3sin10 °tan70 °-2cos40° 求值：tan70°cos10°+根号下3*sin10°tan70°—2cos40° 求值,根号下1-2sin10°cos10°/cos10°-根号下1-sin^2100° (一道数学题)求值:[(1+cos20°)/2sin20°]－sin10°(1/tan5°－tan5°)=(1-4sin10)/2tan10 =（根号3）/2 从上步怎么得到答案的``