sin2x+cos2x是如何化简为一个三角函数的,

sin2x+cos2x是如何化简为一个三角函数的, 2sin2x*cos2x如何化简为-2sin4x书上说相等,怎么化简呢? 2sin2x-cos2x 还能再化简吗?2sin2x-cos2x 怎么化简? 2sin2x+2sinxcosx如何变换为1-cos2x+sin2x sin2x+cos2x+2如何化简sin2x+cos2x如何化为根号2sin(2x+π/4)? cos2x-sin2x化简为一角一函数怎么化? 一道三角化简题1+sin2x-cos2x--------------1+sin2x+cos2x 2cos2x+2sin2x怎么化简 sin2xcos2x+sin2x+2cox2x+1怎么化简为一角一函数啊?尽快在一天之内搞定,是sin2xcos2x+sin2x+2cos2x+1. sin2x+cos2x如何变式 (1+cos2x)/(sin2x-2sin^2 x)应如何化简? (1-cos2x)+sin2x=根号2(sin2x cosπ/4-cos2x sinπ/4)+1 这个是怎么化简得的? sin2x/cos2x-sin2x怎么变成[sin2x·(1-cos2x)]/cos2x ,是怎么变化的? sin2x/(1+cos2x)*cosx/(1+cosx)*sinx/(1-cosx)化简出来是1 g(x)=sin2x+cos2x如何解 sin2x+√3cos2x如何求最大值? (sin2x-cos2x+1)/(1-tanx)怎么化简? sin2x+1-cos2x/根号3,怎么化简?