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Which of the following angles are coterminal to a 21 degree angle? Check all that apply.

Question 1 options:

741 degrees


381 degrees


-339 degrees


-21 degrees

Respuesta :

mathstudent55

Answer:

741 deg, 381 deg, -339 deg

Step-by-step explanation:

To find coterminal angles, add multiples of 360 degrees to an angle measure.

Multiples of 360: 0, -360, 360, -720, 720, -1080, 1080, -1440, 1440, etc.

21 + 360 = 381

21 + 720 = 741

21 - 260 = -339

21 - 720 = -699

Answer:

741 degrees    YES

381 degrees    YES

-339 degrees    YES

-21 degrees   NO

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