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ananiwka
@ananiwka
July 2022
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Юленька194
2) cos^2 α= 1-sin^2 α
cos^2 α= 1-0,64
cosα= -0,6
tg= sin/cos= 0,8/-0,6= -8/6=-4/3
ctgα=cosα/sinα=-0,6/0,8=-0,75
4) cos^2=1-25/169=144/169
cosα=12/13
tgα=-5/13 *13/12= -5/12
ctgα=12/13* (-13/5)=-2,4
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Answers & Comments
cos^2 α= 1-0,64
cosα= -0,6
tg= sin/cos= 0,8/-0,6= -8/6=-4/3
ctgα=cosα/sinα=-0,6/0,8=-0,75
4) cos^2=1-25/169=144/169
cosα=12/13
tgα=-5/13 *13/12= -5/12
ctgα=12/13* (-13/5)=-2,4