sin27π/4的值为

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sin27π/4的值为sin27π/4的值为sin27π/4的值为=sin(3×2π+3π/4)=sin3π/4=√2/2根号2/22^(0.5)=√2/2(sin2xcos2x)-√2=sin(2x

sin27π/4的值为
sin27π/4的值为

sin27π/4的值为
=sin(3×2π+3π/4)
=sin3π/4
=√2/2

根号2/2

2^(0.5)

=√2/2(sin2x cos2x)-√2=sin(2x π/4)-√2 最大值为1-√2