Mathematics: If the point p(-3/5,y) lies on the unit circle and p is in the third quadrant, what is the value of y?

If the point p(-3/5,y) lies on the unit circle - id354382837, ijinaeiaujah8165

Ответ:

memoryofdale

14.01.2022

Mathematics

Since

lies in the third quadrant,

must be negative. Also, because

lies on the unit circle, its coordinates must satsify

$\left(-\dfrac35\right)^2+y^2=1\implies y^2=\dfrac{16}{25}\implies y=\pm\dfrac45$

Take the negative root, since

, so that $y=-\dfrac45$ .

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Ответ:

anonymous115296

26.08.2021

Mathematics

4 1/2 lbs is 9/2. Multiply by 14/3 (same as 4 2/3) and you get 21 lbs

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If the point p(-3/5,y) lies on the unit circle and p is in the third quadrant, what is the value of y?

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