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olegpoletaev
@olegpoletaev
October 2021
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помогите пожалуйста вычислить: а) tg (pi - pi/4) , б) cos ( 3pi/2 + pi/6) , в)sin 5pi/4
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Verified answer
вычислить: а) tg (pi - pi/4)=-1 ,
б) cos ( 3pi/2 + pi/6)=
sin pi/6=1/2,
в)sin 5pi/4=
sin (pi+pi/4)=sin (pi/4)=(√2)/2.
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b1uesky
A) -√3 б) 1/2 в) -√2/2
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Answers & Comments
Verified answer
вычислить: а) tg (pi - pi/4)=-1 ,б) cos ( 3pi/2 + pi/6)=sin pi/6=1/2,
в)sin 5pi/4=sin (pi+pi/4)=sin (pi/4)=(√2)/2.