symbolic processing

Hi there I have a problem and it is under Symbolic Processing topic.

How do I evaluate these expressions in terms of x?

1.) tan(2x-45degrees)

2.) sin(30degrees-3x)

Answer 1

[Paulo Silva]

syms x
f1=tan(2*x-45)   %no tand in my symbolic toolbox so use tan and convert values
f2=sin(30-3*x)   
xx=2 %point where you wish to evaluate the expressions
subs(f1,x,xx)
subs(f2,x,xx)

I already told you about the conversions between rad and degrees so please don't ask it again, edit my answer code so it does exactly what you want.

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