√2(cos50°-sin50°).化简
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√2(cos50°-sin50°).化简
√2(cos50°-sin50°).化简
√2(cos50°-sin50°).化简
√2(cos50°-sin50°)
=√2*√2(cos50°cos45°-sin50°sin45°)
=2cos(95°)
=-2sin5°
√2(cos50°-sin50°)
=2(√2/2cos50°-√2/2sin50°)
=2(sin45°cos50°-cos45°sin50°)
=2sin(45°-50°)
=2sin(-5°)
=-2sin5°
√2(cos50°-sin50°).化简
√(cos50°-sin50°)²+|cos50°-1|
(2sin10°+sin50°)÷cos50°
2sin50°cos50°怎么等于cos50°cos40°+sin50°sin40°
化简 1/sin50°+根号下3/cos50°
求职:1/sin50° +√3/cos50°
求1/sin50°+√3/cos50°的值
求值:1/sin50°+√3/cos50°
sin50°*cos50°=1/2sin100°
数学(cos50°*tan50°)-sin50°
sin50°,cos50°分别等于多少
sin50°-cos50°等于多少
SIN50°+COS50°还能再化简了吗
sin50°-cos50°等于什么
cos60°cos10°/cos50°=cos10°sin50°/2sin50°cos50° 这一步怎么出来啊
cos5°/(sin50°+cos50°)=?不好意思,打错了,是根号2cos5°/(sin50°+cos50°)=?
求值:2sin50°+cos10°(1+根号3tan10°)/根号下1+2sin50°cos50°
(cos10°-cos50°)÷(sin10°-sin50°)