Photos 2SIN Π X

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2sin π x. Sin^2-cos^2x=√3/2 на промежутке. Sin(π - x) – cos(π/2 +x) = -1.. 2cos2(x− π 2 )+sin(π+2x)=0. Sin(π+a)cos(π/2-a)-cos^2( a).
Sin^2-cos^2x=√3/2 на промежутке. Sin(π - x) – cos(π/2 +x) = -1.. 2cos2(x− π 2 )+sin(π+2x)=0. Sin(π+a)cos(π/2-a)-cos^2( a).

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