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slatvinskaya131mery
@slatvinskaya131mery
August 2022
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Дано: tgx =2, П З-ти: sinx, cosx, ctgx ?
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amin07am
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Ответ фоткан...................
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sedinalana
Tgx=2
ctgx=1/tgx=1/2
cos²x=1:(1+tg²x)=1:(1+4)=1/5
sin²x=1-cos²x=1-1/5=4/5
cosx=1/√5;sinx=2/√5 U cosx=-1/√5;sinx=-2/√5
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Ответ фоткан...................ctgx=1/tgx=1/2
cos²x=1:(1+tg²x)=1:(1+4)=1/5
sin²x=1-cos²x=1-1/5=4/5
cosx=1/√5;sinx=2/√5 U cosx=-1/√5;sinx=-2/√5