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Now, keeping in mind that, sine is opposite/hypotenuse, and that the hypotenuse is just a radius unit, and therefore is never negative, then, in the fraction of -3/5, the negative values has to be the numerator, not the hypotenuse.
something else to keep in mind is that, cosine > 0, meaning is positive, that only happens in the I and IV quadrants.
since we know the sine is negative, and the cosine is positive, the only place that occurs is on the IV quadrant, so then θ is in the IV quadrant.
something else to keep in mind is that, cosine > 0, meaning is positive, that only happens in the I and IV quadrants.
since we know the sine is negative, and the cosine is positive, the only place that occurs is on the IV quadrant, so then θ is in the IV quadrant.