Asked by elena
                Compare the graphs 
f(è)=sinè and f(è)=sin(-è).
f(è)=cosè and f(è)=cos(-è).
What conclusions can you make?
            
            
        f(è)=sinè and f(è)=sin(-è).
f(è)=cosè and f(è)=cos(-è).
What conclusions can you make?
Answers
                    Answered by
            elena
            
    e = theta :(
    
                    Answered by
            bobpursley
            
    sine is an odd function.
cosine is an even function.
Look at the symmetry around Theta=0
    
cosine is an even function.
Look at the symmetry around Theta=0
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