Упростить выражение: 1/2cost - sin(π/6+t)
(1/2)*cost - sin(π/6 + t) = (1/2)*cost - sin(π/6)*cost - cos(π/6)*sint =
= (1/2)*cost - (1/2)*cost - cos(π/6)*sint = - (√3/2)*sint
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(1/2)*cost - sin(π/6 + t) = (1/2)*cost - sin(π/6)*cost - cos(π/6)*sint =
= (1/2)*cost - (1/2)*cost - cos(π/6)*sint = - (√3/2)*sint