# Use a calculator to find the value of the trigonometric function sin((3pi)/10) to four decimal places.

Use a calculator to find the value of the trigonometric function $\mathrm{sin}\left(\frac{3\pi }{10}\right)$ to four decimal places.
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Use a calculator to find the value of the given trigonometric function up-to four decimal places.
$\mathrm{sin}\left(\frac{3\pi }{10}\right)=0.8090$
Hence, the value of the given trigonometric function up to four decimal places is 0.8090
Jeffrey Jordon