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I don't know how to do this???

I don't know how to do this???-example-1

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4 votes

2)

check the picture below.


and the reference angle, is pretty much just the angle it makes with the x-axis, so in this case, it makes a 45° with the x-axis on the II Quadrant, so the reference angle is 45°.

I don't know how to do this???-example-1
User Ilj
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