计算﹙cos15°×sin8°＋sin7°﹚÷﹙cos7º-sin15°×sin8°﹚

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 求(sin7度+cos15度sin8度)/(cos7度-sin15度sin8度)的值 求cos15°-tan15°/cos15°+sin15° (cos15°-cos75°)(sin75°+sin15°)＝? tan15°+cos15°/sin15°的值 求详解 求sin15°+tan30°cos15°的值 sin15° 求值(sin9°cos15°-sin24°)/(sin9°sin15°+cos24°) tan15°、tan75°sin15°、sin75°、cos15°cos75°具体数值