How can I set trigonometric functions to be in degrees (nor radians)?

sin(90 deg)=1 m/m

cos(90 deg)=1m/m

asin(1 m/m)=1.572 rad

asin(1 m/m)=90 deg

asin(1 m/m)=100 grad

etc

Or you can use Mathcad Prime Minister

Rad Deg Grad Etc

There is no option to change the default (pseudo)unit of angle to something else than radian.

If you want a length to be in meter you write m, if it shoul be interpreted as feet you write ft.

The same applies to the pseudounits of "dimension"  angle. If you want a quantity in degree, you have to write "deg" or "°".

If you want it in radian you either write "rad" or nothing at all, as rad=1.

If you are using the symbolics they don't know anything about units and will treat deg or ° as unknown variable. So you would have to define °:=pi/180 and/or deg:=pi/180 yourself.

Narasipur Suryanarayana wrote: I am working on problems where all the angles are in degrees and the trigonometric functions should read them as such. It is a lot of work to make sure that all the angles are converted to radians before the algebraic expressions involving them are evaluated. Is there any way that a statement or preference can be added so that mathcad correctly evaluates the trigonometric functions with the arguments in degrees?

Either use the built-in unit conversion facility or redefine the trig function to work in degrees.

Stuart