化简sin8°+cos8°\sin8°-cos8°
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/18 04:27:51
化简sin8°+cos8°\sin8°-cos8°
![化简sin8°+cos8°\sin8°-cos8°](/uploads/image/z/18002366-62-6.jpg?t=%E5%8C%96%E7%AE%80sin8%C2%B0%2Bcos8%C2%B0%5Csin8%C2%B0-cos8%C2%B0)
(sin8°+cos8°)/(sin8°-cos8°)
=(sin8°+cos8°)²/[(sin8°-cos8°)(sin8°+cos8°)]
=[1+sin16°]/[-(cos²8°-sin²8°)]
=-(1+sin16°)/cos16°
=(sin8°+cos8°)²/[(sin8°-cos8°)(sin8°+cos8°)]
=[1+sin16°]/[-(cos²8°-sin²8°)]
=-(1+sin16°)/cos16°
1.sin7°+cos15°sin8°/cos7°-sin15°cos8°=
(sin7°+cos15°cos8°)/(sin7°-sin15°sin8°)的化简
关于三角函数的计算题(sin8°+sin7°cos15°)÷(cos8°-sin7°sin15°)=?
求(sin8°+sin7°cos15°)/(cos8°-sin7°sin15°)的值
化简(cos⁴7°30′-sin⁴7°30′)(sin23°cos8°-sin67°sin8°)
sin8*cos8判断此三角函数值得符号
化简2根号下(1+sin8)+根号下(2+2cos8)
化简 cos8次方x减sin8次方x+1/4sin2xsin4x
2根号下(1+sin8)-根号下(2cos8+2)
2倍更号sin8+1加根号下2cos8+2
2根号1+sin8+根号2+2cos8=
2根号1-sin8+根号2+2cos8