6.1 Angles and Radian Measure

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Presentation transcript:

6.1 Angles and Radian Measure Essential Questions What is a radian? How do you convert between degrees and radians? How do you find arc length? How do you find the area of a sector?

Conversion of angle We can convert from degrees to radians using a unit multiplier: On Practice Sheet: 1. Change -250° to radians 7. Change 4π radian to degrees

Common Conversions 13. Evaluate tan π/4 14. Evaluate cos 3π/2 Degrees Radians 13. Evaluate tan π/4 14. Evaluate cos 3π/2

More practice… 19. Find the length of the arc formed from a central angle of π/6 radians.

More practice… 22. Find the area of the sector of a circle with a central angle of π/6 radians and radius 14 units.