<Tr> <Td> 1 / 10 </Td> <Td> π / 5 </Td> <Td> 36 ° </Td> <Td> 40 </Td> </Tr> <Tr> <Td> 1 / 8 </Td> <Td> π / 4 </Td> <Td> 45 ° </Td> <Td> 50 </Td> </Tr> <Tr> <Td> 1 / 2π </Td> <Td> </Td> <Td> c . 57.3 ° </Td> <Td> c . 63.7 </Td> </Tr> <Tr> <Td> 1 / 6 </Td> <Td> π / 3 </Td> <Td> 60 ° </Td> <Td> 66 2 / 3 </Td> </Tr>

Where is one radian on the unit circle