________________ Convert Degrees to Radians ANSWER KEY ________________ 1. 90° = radians ≈ 1.571 radians 2. 60° = radians ≈ 1.047 radians 3. 180° = radians ≈ 3.142radians 4. 285° = radians ≈ 1.571 radians 5. 342° = radians ≈ 4.974 radians 6. -15° = radians ≈ -0.262 radians 7. 48° = radians ≈ 0.838 radians 8. 1085° = radians ≈ 18.937 radians 9. -640° = radians ≈ -11.170 radians 10. -344° = radians ≈ -6.004 radians 11. BONUS: Derive the formula for the conversion of degrees to radians. = 180 or = 180*1° therefore, 1° = thus, degree measure = radian measure * ________________ ________________ What to Learn Next Practice Problems ________________ How to Convert Radians to Degrees: 12. radians = 90° How to Convert Latitude and Longitude Units from Degrees to Decimal Forms 13. 60° 15’ 30” = 60.2583° How to Memorize the Unit Circle