Question

P is a point on the terminal side of θ in standard position. Find the exact value of the six trigonometric functions for θ.

18. P(-3, 2)
19. P(4, -2)
20. P(0, -6)
21. P(-3, -4)

Answer 1

see below

Explanation:

When you're doing a bunch of these, it is helpful to make a table with reminders as to how they're calculated. That table is shown below.

__

In the attached, we have used ...

r² = x² +y²

√20 = 2√5

√36 = 6

√25 = 5

and 1/(2√5) = √5/10. (The division is outside the radical.)