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](/uploads/image/z/4327405-61-5.jpg?t=cos2x%2Bsin2x%E5%8F%98%E6%88%90%E2%88%9A2%C3%97sin%282x%2B%CF%80%2F4%EF%BC%89%E6%89%93%E6%BC%8F%E4%BA%86%EF%BC%8Ccos2x%2Bsin2x%E5%8F%98%E6%88%90%E2%88%9A2%C3%97sin%282x%2B%CF%80%2F4%EF%BC%89%E7%9A%84%E8%BF%87%E7%A8%8B)
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)