Ch 5.1 Flashcard (AL)

Front

What are coterminal angles?

Back

Coterminal angles are angles that share the same terminal side when drawn in standard position. They can be found by adding or subtracting multiples of 360° (or 2π radians).

Front

How do you find a positive coterminal angle for a given angle?

Back

To find a positive coterminal angle, add 360° (or 2π radians) to the given angle until the result is positive.

Front

How do you find a negative coterminal angle for a given angle?

Back

To find a negative coterminal angle, subtract 360° (or 2π radians) from the given angle until the result is negative.

Front

What is the coterminal angle of 240 degrees?

Back

The positive coterminal angle is 600° and the negative coterminal angle is -120°.

Front

What is the closest measure to 395 degrees in standard position?

Back

395 degrees is equivalent to 35 degrees in standard position, as it is coterminal with 35 degrees.

Front

How do you convert radians to degrees?

Back

To convert radians to degrees, multiply the radian measure by 180/π.

Front

What is 7π/4 radians in degrees?

Back

7π/4 radians is equal to 315 degrees.

Front

What is 5π/6 radians in degrees?

Back

5π/6 radians is equal to 150 degrees.

Front

What is 4π/3 radians in degrees?

Back

4π/3 radians is equal to 240 degrees.

Front

What is the formula to convert degrees to radians?

Back

To convert degrees to radians, multiply the degree measure by π/180.