Ответы и объяснения

2013-01-08T16:54:26+00:00

1)pix/4=t

sint=-1

t=-pi/2+2pik . k=z

pix/4=-pi/2+2pik

x=-2+2k . k=z

2)pi(x+2)/3=t

sint=-√3/2

t=-pi/3+2pik

t=-2pi/3+2pik

1.pi(x+2)/3=-pi/3+2pik

x+2=-1+6k

x=-3+6k . k=z

2.pi(x+2)/3=-2pi/3+2pik

x+2=-2+6k

x=-4+6k . k=z

3)2pix/3=t

cost=√3/2

t=pi/6+2pik . k=z

t=-pi/6+2pik . k=z

1.2pix/3=pi/6+2pik

x=1/4+3k . k=z

2.2pix/3=-pi/6+2pik

x=-1/4+3k . k=z

 

x=+-1/4+3k . k=z