4 ms·cosine is a continuous function. Rationals are dense in reals etc. eg, arccos(1/3)by nanis 10y agocosine is a continuous function. Rationals are dense in reals etc. eg, arccos(1/3)Mi_Ka_ 10y agoYes, arccos(1/3) = 70.5287794 degreesgus_massa 10y agoThe important point is that cos(arcos(1/3)) = cos(70.5287794... degrees) = 1/3 that is a rational value.