а) (sint - cost)^2 + sint cost б) (sint + cost)^2 - 2 sint cost

Question

а) (sint - cost)^2 + sint cost

б) (sint + cost)^2 - 2 sint cost

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Answer 1

а)(sin t-cost)^2+2 sint*cost 
sin^2(t)-2sin(t)cos(t)+cos^2(t)+2sin(t)cos(t)