jimkey17

1L=1000cm³ so  it is 8*1000=8000cm³ so we have 8000/10/25=800/25=32 so the length of the rectangular container is 32

We solve that cos(180)=-1

is this correct

tan300=-sqrt3 and tan60=sqrt3 so we have $\tan 300=-\sqrt3~~and~~\tan 60=\sqrt3$

since 0!=1

k can also equal 0

tan90^o is undefined

constant of proportionality is y/x so the constant of proportionality is 7

we know that i^2=-1 so we can have the equation -i+1+i+-1+-i which simplifies to  -i+1+i-1-i where i and -1 cancel and the 1 and -1 cancel to get -i

so this equation simplifies to -i

$-i$

This happend a lot to me