化简1/sin10°-√3/cos10°

来源：学生作业帮助网编辑：作业帮时间：2024/04/29 21:19:24

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]｝