Answer:
Therefore,
[tex]\cos \theta=-3[/tex]
Step-by-step explanation:
Unit Circle:
In mathematics, a unit circle is a circle with a unit radius. Frequently, especially in trigonometry, the unit circle is the circle of radius one centered at the origin (0, 0) in coordinate System.
So the coordinate of point P on the circle is given as,
[tex]P(x,y)=(r\cos \theta,r\sin \theta)[/tex]
Here,
Given:
P(-3,2)
So if Radius is one unit i.e r = 1 then on Comparing we get
[tex]P(-3,2)=(\cos \theta,\sin \theta)[/tex]
∴[tex]\cos \theta=-3[/tex]
Therefore,
[tex]\cos \theta=-3[/tex]
