Question

Write an expression for the point P. [PIC]
The picture is sadly enough incomplete, but lets say r=1 as in the unit circle.

Answer 1

Here it is.

Answer 2

I'll keep r symbolic. If the line that leads from the x-axis to point P is perpendicular to the x-axis, what is p's x-value?

Answer 3

aha, r. But what about y.

Answer 4

Well, I'd suggest removing the circle from your drawing and keeping v and your new x value.

Answer 5

What does it look like? (Use the 'Draw' feature under the reply box)

Answer 6

tan v = y/r
r tan v = y
P = ( r, r tan v) ?

Answer 7

Right

Answer 8

Thank you!

Answer 9

YW. Don't forget to close the question.