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Degrees <> Radians. Convert from degrees to radians. Multiply the degree measure by ( π /180) So, 150 o = (5 π / 6) radians because: 150 ( π /180) = 150 π / 180 150/180 reduces to 5/6. Convert from radians to degrees. Multiply the radian measure by (180/ π )
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Convert from degrees to radians • Multiply the degree measure by (π/180) • So, 150o = (5 π/ 6) radians because: • 150 (π/180) = 150 π/ 180 • 150/180 reduces to 5/6
Convert from radians to degrees • Multiply the radian measure by (180/ π) • So (11 π/ 6) radians = 330o because: • (11 π/ 6) (180/ π) = (11*180* π) / (6 π) • π cancels • 1980/6 = 330
Convert each measure to radians: • 1) 210o • Answer: (7 π) / 6 • 2) -540o • Answer: -3 π
Convert each measure to degrees • 3) (5 π) / 4 • Answer: 225o • 4) (7 π) / 9 • Answer: 140o