向左平移π/2个单位
1/sin10度-根号3/cos10度的值=(cos10-根号3sin10)/sin10cos10
=1/2(1/2cos10-3/2sin10)/sin10cos10
=1/2(sin30cos10-cos30sin10)/sin10cos10=sin(30-10)/sin20=1
-π/2+2kπ
向左平移π/2个单位
1/sin10度-根号3/cos10度的值=(cos10-根号3sin10)/sin10cos10
=1/2(1/2cos10-3/2sin10)/sin10cos10
=1/2(sin30cos10-cos30sin10)/sin10cos10=sin(30-10)/sin20=1
-π/2+2kπ