Try another version of this question Convert the angle `664^@` to radians. Give the exact value. This means there should be a `pi` in your answer. Also, any fraction in your answer should be fully reduced. Get help: Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity
Decimal values are not allowed `(166 pi)/45`