Interactive practice questions
Given that $x=180^\circ$x=180° represents half a circle, what fraction of the circumference of the unit circle does $x=60^\circ$x=60° represent?
Easy
< 1min
Given that $x=180^\circ$x=180° represents half a circle, what fraction of the circumference of the unit circle does $x=225^\circ$x=225° represent?
Easy
< 1min
What fraction of the circumference of the unit circle does $s=450^\circ$s=450° represent?
Easy
< 1min
Consider the sine function.
Easy
< 1min
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