帮忙求下这2个角度是多少?∠arctan(-2/-2√3)和∠arctan(-2/2√3)

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帮忙求下这2个角度是多少?∠arctan(-2/-2√3)和∠arctan(-2/2√3)帮忙求下这2个角度是多少?∠arctan(-2/-2√3)和∠arctan(-2/2√3)帮忙求下这2个角度是

帮忙求下这2个角度是多少?∠arctan(-2/-2√3)和∠arctan(-2/2√3)
帮忙求下这2个角度是多少?∠arctan(-2/-2√3)和∠arctan(-2/2√3)

帮忙求下这2个角度是多少?∠arctan(-2/-2√3)和∠arctan(-2/2√3)
arctan(-2/-2√3)
=arctan(√3/3)
=π/6
=30°
∠arctan(-2/2√3)
=-arctan(√3/3)
=-π/6
=-30°
要记住arctan的取值范围是(-π/2,π/2)