How to find degrees given negative radian??? | Mathematics | Page 1

worn verge May 5, 2023, 5:44 AM

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I am given polar coordinates (-2,-5pi/3) and I am trying to convert the -5pi/3 to degrees. I multiplied by 180/pi and got -300. What!!!!!! I need to plug this into x=rcos(theta) and I dont know how to get the radian back out of that -300.....

devout wraithBOT May 5, 2023, 5:44 AM

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worn verge May 5, 2023, 5:46 AM

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I realize I am making this hard on myself. I am confused because 5pi/3 is (1/2,sqrt3/2) but what do i do with a negative 5pi/3???

glossy saddle May 5, 2023, 6:47 AM

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You can always convert it to positive radians by subtracting the negative value from 2pi

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Also you did that conversion correctly it IS -300°

#How to find degrees given negative radian???