If P Q R 0 PI 2 Q1 and R 2121 then the angle between R and P

Last updated: 6/1/2023

If P Q R 0 PI 2 Q1 and R 2121 then the angle between R and P is 1 COS 3 tan 1 5 4 2 1 2 2 4 sin 1 tan 3 4 2 5 4 2