Question 1031644
Use the first five terms of the trigonometric series (shown below) to approximate sin(π/5).

sin(x)=x-x^3/3!+x^5/5!-x^7/7!+...
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You listed 4 terms.
sin(x)=x-x^3/3!+x^5/5!-x^7/7!+x^9/9!
--> 0.59456922
--> 36.48 degs or 0.202674889*pi radians