tan^-1(y/x)=25
how
Did you mean tan ^ -1 is arctanyx or 1tanyx ?then:
A) arctanyx=25 (8π=25.274)
yx=tan 25
y=tan 25×x
y=− 0.133526 x !
B) 1tanyx=25
125=tanyx
atan125=yx
y=x×atan125
y=0.0399786687 x !