360 angular degrees are 2pi measure so we could calculate radius as sin^2 x + cos^2 x =1 so angular spuculum is done by combining sen and cos arches to the middle for every diameter in circumference, the quadratium is Always positive so with II+II entities we have all the spectrum and the points far. The value goes from -1 to 1 for both and they are opposite so we can say sin*sin+cos*cos=1 so sin*sin+cos*cos=sin+ cos so "avrarage"(sin*sin+cos*cos)="avarage"(sin+ cos) so "avarage"(sin*sin+cos*cos)=1 then max 1 min 1 so sin+cos=sin^2 x + cos^2 then 1=4