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July 2022
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упростите выражение..........................
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lara164
Verified answer
А) =sin²a- 2*sina *cosa+ cos²a +sin²a+ 2*sina *
cosa+ cos²a -2=
2*sin
²a+2*cos²a-2 = 2(sin²a +cos²a)-2 = 2*1-2 = 2-2 =0
б) =
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Answers & Comments
Verified answer
А) =sin²a- 2*sina *cosa+ cos²a +sin²a+ 2*sina *cosa+ cos²a -2=2*sin²a+2*cos²a-2 = 2(sin²a +cos²a)-2 = 2*1-2 = 2-2 =0
б) =