Question

If the point P(-,y) lies on the unit circle and P is in the third quadrant, what does y equal?..In a fraction if it is possible.

Answer 1

For any values greater then pi/2 in a unit circle should have a negative x value

Answer 2

oh my goodness
(-4/5,y)

Answer 3

@Axohatah

Answer 4

Huh? what are you asking?

Answer 5

instead of (-,y) ....it should be the other....my keyboard messed up or something

Answer 6

well ok then its the same thing, Look at the circle and see in the third quadrant, it shows us itll be a -y value. What i dont understand is how we are supposed to find a y value with no other means to it (like a theta) since the answer could lie anywhere between y=-(4/5)/(tan(pi)) to y=-(4/5)/(tan(3pi/2))

Answer 7

x is -4/5 i think i need where the y crosses the x on the unit circle

Answer 8

third quadrant is between pi and 3pi/2, i don't know how to get it without a theta value, But im guessing its going to be -3/5

Answer 9

I am very confused

Answer 10

i need to find the y value of that