求(sin^2)15°(cos^2)15°
问题描述:
求(sin^2)15°(cos^2)15°
答
(sin^2)15°(cos^2)15°=(sin15°cos15°)^2=(sin30°/2)^2=(1/4)^2=1/16
求(sin^2)15°(cos^2)15°
(sin^2)15°(cos^2)15°=(sin15°cos15°)^2=(sin30°/2)^2=(1/4)^2=1/16