求值:1/sin50°+√3/cos50°
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求值:1/sin50°+√3/cos50°求值:1/sin50°+√3/cos50°求值:1/sin50°+√3/cos50°1/sin50°+√3/cos50°=(cos50+√3sin50)/(s
求值:1/sin50°+√3/cos50°
求值:1/sin50°+√3/cos50°
求值:1/sin50°+√3/cos50°
1/sin50°+√3/cos50°
=(cos50+√3sin50)/(sin50 cos50)
=2(1/2cos50+ √3/2sin50)/(1/2(sin100))
=4(sin(50+30)/sin100
=4sin80/sin100
=4
求值:1/sin50°+√3/cos50°
求值:1/sin50°+根号3/cos50°
√(cos50°-sin50°)²+|cos50°-1|
求值:2sin50°+cos10°(1+根号3tan10°)/根号下1+2sin50°cos50°
求职:1/sin50° +√3/cos50°
求1/sin50°+√3/cos50°的值
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化简 1/sin50°+根号下3/cos50°
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sin50°*cos50°=1/2sin100°
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