用辅助角公式化简y=（根号3）sin2x+cos2x
问题描述：
用辅助角公式化简y=（根号3）sin2x+cos2x
答
y=√3sin2x+cos2x
=2[(√3/2)sin2x+(1/2)cos2x]
=2(sin2xcos30°+cos2xsin30°)
=2six(2x+30°)