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натуся888
@натуся888
August 2021
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помогите СРОООЧНО!!!!
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skyne8
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2) sin(a)= -√(1-cos²(a))= -√(1 -5/9)=-2/3, tg(a)=sin(a)/cos(a)=2/√5
3)sin(a) = tg(a)/√(tg²(a) +1)=2√2/3
4) cos(a) = -ctg(a)/√(ctg²(a)+1)=-√2/√3
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oganesbagoyan
sin ?? cos ?? tq ?? ctq ??
skyne8
что "значит sin ?? cos ?? tq ?? ctq ??" ?
oganesbagoyan
без аргументов
skyne8
))) исправить? )
oganesbagoyan
желательно
fadarm
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2 votes
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Answers & Comments
Verified answer
2) sin(a)= -√(1-cos²(a))= -√(1 -5/9)=-2/3, tg(a)=sin(a)/cos(a)=2/√53)sin(a) = tg(a)/√(tg²(a) +1)=2√2/3
4) cos(a) = -ctg(a)/√(ctg²(a)+1)=-√2/√3
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См. прикрепленный файл