radius av serkel=sqrt(40)=6.32455532
senter av serkel=(7,3)
line y=3x+4, go thru point=(0,4)
distans from senter tu this point...deltax=7, deltay=1, so distans=sqrt(50)=7.071...
it be outside serkel...hit line mite not ever hit serkel
Tu find out, draw line from serkel 90 deg tu line...slope=-1/3,
or angel=(180-18.4394881) deg
this line:is y=-(1/3)x +16/3
get smak point av the 2 lines...y=3x+4=-(1/3)x+16/3
or 3x+4=-(1/3)x+16/3
9x+12=-x+16
10x=16-12=4
x=0.4
y=3x+4...=1.2+4=5.2
2 strate lines hit at (0.4,5.2)
distans from serkel senter...deltax=6.6, deltay=2.2, dist=6.957010852
> serkel radius av 6.32455532
line 1 NEVER hit serkel