The result of your conversion between 1/2 circle and degree appears here
To convert between 1/2 Circle and Degree you have to do the following:
First divide (Math.PI) / (Math.PI/180) = 180.
Then multiply the amount of 1/2 Circle you want to convert to Degree, use the chart below to guide you.
Symbol: per 2 circle
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Symbol: °
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