cos5°/(sin50°+cos50°)=?不好意思,打错了,是根号2cos5°/(sin50°+cos50°)=?
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cos5°/(sin50°+cos50°)=?不好意思,打错了,是根号2cos5°/(sin50°+cos50°)=?cos5°/(sin50°+cos50°)=?不好意思,打错了,是根号2cos5°
cos5°/(sin50°+cos50°)=?不好意思,打错了,是根号2cos5°/(sin50°+cos50°)=?
cos5°/(sin50°+cos50°)=?
不好意思,打错了,是根号2cos5°/(sin50°+cos50°)=?
cos5°/(sin50°+cos50°)=?不好意思,打错了,是根号2cos5°/(sin50°+cos50°)=?
cos5°/(sin50°+cos50°)
=cos5°/√2(√2/2sin50°+√2/2cos50°)
=1/√2*[cos5°/(sin50°cos45°+cos50°sin45°)]
=1/√2*cos5°/sin95°
=1/√2*1
=1/√2.
=√2/2
cos5°/(sin50°+cos50°)=?不好意思,打错了,是根号2cos5°/(sin50°+cos50°)=?
√(cos50°-sin50°)²+|cos50°-1|
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
2sin50°cos50°怎么等于cos50°cos40°+sin50°sin40°
sin50°*cos40°+cos50°*sin40°如题
计算sin50°cos40°+cos50°sin40°
求值sin70°cos50°+sin20°sin50°=?
(sin10°+cos50°)/(cos10°-sin50°)?
sin10°cos50°+sin50°cos10°
sin10°cos50°+sin50°cos10°
sin50°=a cos40°=?cos50°?
(2sin10°+sin50°)÷cos50°
sin50°*cos50°=1/2sin100°
1/sin50°+根号下3/cos50°=