Preference of outputting sine function

Hello, can anybody help me with this:

sympref('FloatingPointOutput',true);

syms theta

F=2*sind(2*theta)

--------------------------

F =

2*sin(0.0349*theta)

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I want the sine function to be sine in degrees in the output, I don't want the program to automatically convert it to radians.. Can anyone help ?

Thanks !!

[Matt J]

Isn't 2*sin(0.0349*theta) equivalent to 2*sind(2*theta)? I don't see the problem.

[Ahmad Madkhanah]

I want the form of the answer to be in sind and not in sin

That's my problem

It looks easy here but I have longer statements and functions, if I could get sind function in the output in would help me a lot..

[Matt J]

Is it just an aesthetic preference? What would be the practical benefit of having things expressed in terms of sind?

[Ahmad Madkhanah]

No, I just don't wanna have to multiply every theta with 180/pi

Assume I have this:

sympref('FloatingPointOutput',true);
syms w
syms m
syms r
syms L
syms theta
alpha=input('Enter the angle alpha: ');
F1=m*r*w^2*(cosd(theta+alpha)+r/L*cosd(2*theta+2*alpha));
F1=simplify(F1,'Steps',10);
disp(F1)

---------------------------

Enter the angle alpha: 45
m*r*w^2*(cos(0.0175*theta + 0.7854) + (r*cos(0.0349*theta + 1.5708))/L)

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I should get an answer like this: F1=m*r*w^2*(0.707*(cosd(theta) - sind(theta)) - r/L*sind(2*theta))

How can I get the to the closest form of this answer ?

the case might require a theta input too, how could I get an expression that is valid for these cases too ?

[Ahmad Madkhanah]

The answer is for machine dynamics class, so also yes, the form of the answer matters a bit..