You can make the segment on either end of a cable or channel tangential to that of another cable or channel, or to another segment of the same cable or channel.
To modify a cable's tangency,
1. Modify a cable's or a channel's tangency:
◦ Click Cabling and then, in the Modify group, click Make Tangent. The Make Tangent dialog box opens.
1. Click Channel and then, in the Modify group, click the arrow next to Modify.
2. Click Make path tangent. The Make Tangent dialog box opens.
2. Click Edge and select the edge to modify.
Where you click the edge matters. This command takes the closest end to the selection point.
3. Click Curve and select the curved segment whose tangency you wish to use.
Make Tangent. The Make Tangent dialog box opens.
Modify.
Make path tangent. The Make Tangent dialog box opens.