It is a 30 degree angle or an acute angle.
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cosec(30) = 2 if the angle is measured in degrees.
Angles are measured in degrees, minutes and seconds as for example 660 30' 54''
A reflex angle
I believe that N30 degrees means 30 degrees North.
An angle of 30 degrees is an acute angle because it is greater than 0 but less than 90 degrees