cos2x+sin2x变成√2×sin(2x+π/4)打漏了,cos2x+sin2x变成√2×sin(2x+π/4)的过程

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cos2x+sin2x变成√2×sin(2x+π/4)打漏了,cos2x+sin2x变成√2×sin(2x+π/4)的过程
cos2x+sin2x变成√2×sin(2x+π/4)
打漏了,cos2x+sin2x变成√2×sin(2x+π/4)的过程

cos2x+sin2x变成√2×sin(2x+π/4)打漏了,cos2x+sin2x变成√2×sin(2x+π/4)的过程
cos2x+sin2x
=√2(√2/2*cos2x+√2/2*sin2x)
=√2(sinπ/4*cos2x +cosnπ/4*sin2x)
=√2sin(2x+π/4)