Question
Suppose that the point
is in the indicated quadrant. Decide whether the given ratio is positive or negative. Recall that
.
III,
Choose whether the given ratio is positive or negative.
Nogative
Positive
III,
Choose whether the given ratio is positive or negative.
Nogative
Positive
Ask by Ruiz Mcfarlane. in the United States
Dec 18,2024
Upstudy AI Solution
Tutor-Verified Answer
Answer
In Quadrant III, the ratio
is Positive.
Solution
In Quadrant III, both the
and
coordinates of a point
are negative, while the radius
is always positive. Depending on the specific ratio you’re examining, here’s how you can determine its sign:
-
Sine Ratio (
) - Sign: Negative
- Reason:
is negative and is positive.
-
Cosine Ratio (
) - Sign: Negative
- Reason:
is negative and is positive.
-
Tangent Ratio (
) - Sign: Positive
- Reason: Both
and are negative, and a negative divided by a negative yields a positive result.
-
Other Ratios:
-
or : Positive - Both
and are negative, so their ratio is positive.
- Both
-
: Positive - By definition,
is always positive.
- By definition,
-
Summary for Quadrant III:
- Negative Ratios:
- Positive Ratios:
Example:
If you’re asked whether is positive or negative in Quadrant III:
If you’re asked whether
- Answer: Positive
This is because both
and
are negative, making their ratio
positive.
If you have a specific ratio in mind, feel free to provide it, and I can help determine its sign in Quadrant III!
Answered by UpStudy AI and reviewed by a Professional Tutor
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Beyond the Answer
In the third quadrant, both x and y coordinates are negative, which means that when we compute the ratio of y to x (i.e.,
), we are dividing a negative number by another negative number. This leads to a positive result, as the negatives cancel each other out. Therefore, the ratio is positive.
However, if you consider the ratio of y to r or x to r, it will still be based on the same principle. Since r is always positive (being the square root of a sum of squares), the ratio involving r, like
or
in the third quadrant will thus yield a negative result because y and x are both negative. Nonetheless, if referencing just
specifically, consider it positively in context.