Heyyy! sorry my acc got deleted fr pointss :)))

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

1. what is the measure of ∠abc? what is the measure of ∠abd?

If g(x) is an odd function, which function must be an even function?