sin15度+根号3cos15度=
问题描述：
sin15度+根号3cos15度=
答
sin15°＋√3cos15°
=2[(1/2)sin15°＋(√3/2)cos15°]
=2[sin15°cos60°＋cos15°sin60°]
=2sin(75°)
=2sin(30°＋45°)
=2[sin30°cos45°＋cos30°sin45°]
=(√6＋√2)/2