a salesman who's always looking for an 'angle' [=looking for a way to convince people to buy the things he is selling]
The two lines meet at a 30-degree 'angle' to each other. = There is a 30-degree 'angle' between the two lines.
The two lines form a sharp 'angle'. = The two lines meet/intersect at a sharp 'angle' (to each other).
(..) I'm gonna be late. Okay, so how do we calculate linear acceleration... ...between points A and B? Flash. It's the product of sine of the angle and gravity divided by mass. Nope. Peter. You still with us? PETER: Uh, uh, yeah, yeah. Uh... (..)2017 Spider-Man: Homecoming