i want to enclose a link here
https://aprendervalor.com/what-term-describes-the-tectonic-feature-along-the-seafloor-at-the-blue-plate-boundary-at-the-arrow
Roaraion on it axis and revolution around the sun
It depends on what you're asking. If angle a and b are both on a straight line, b would equal 169 degrees because the total has to add up to 180 degrees, but if they are on a right angle, b would equal 79 because it has to add up to 90 degrees.
