Question

wch have great value among cos 6 degree or cos 60 ?why?

Answer 1

The value of cos decreases with increasing in angle so cos 6 has more value than cos60

Answer 2

cosine function is a decreasing function in the interval (0,90) . In simple words cos6 value is more than cos60.
in exact cos6°= 0.99 and cos60°= 0.5