sin9兀,cos9兀等于几
化简COS8°-SIN17°SIN9°/COS9°
求值:(sin9°+sin6°cos15°)/(cos9°-sin6°sin15°)
化简(sin15°cos9°-cos66°)/(sin15°sin9°+sin66°)的结果是?
兀等于几.,、!?
sin6+cos15*sin9/cos6-sin15*sin9
等于几
化简:(cos15度sin9度+sin6度)/(sin15度sin9度-cos6度)
求值(sin9°cos15°-sin24°)/(sin9°sin15°+cos24°)
cos15°sin9°+sin6°/sin15°sin9°—cos6°=
几除以几等于0.14
几人民币等于几欧元?
几除以几等于四?