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astravgfrygtfg
@astravgfrygtfg
July 2022
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sin(п-а)+cos(3/2п-а)ctg (п/2+а)/tg (2п-а) упростите выражение
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Answers & Comments
Laylowka123
Sin(п+а)+cos(3п/2-а)= –sina–sina= –2sina
tg(п/2+а) –ctg(2п–а)= –ctga+ctga=0
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tg(п/2+а) –ctg(2п–а)= –ctga+ctga=0