SOLUTION: Dear Sir/Madam; Good day! kindly help me with this problem: Express the given angles in the form 180°n+A and find the coordinates of P(x,y) where P is the intersection o

Algebra ->  Trigonometry-basics -> SOLUTION: Dear Sir/Madam; Good day! kindly help me with this problem: Express the given angles in the form 180°n+A and find the coordinates of P(x,y) where P is the intersection o      Log On


   



Question 827208: Dear Sir/Madam;
Good day! kindly help me with this problem:
Express the given angles in the form 180°n+A and find the coordinates of P(x,y) where P is the intersection of the terminal side of the angle and the unit circle.
a) -240°
b) 1320°
Thank you so much for your help!

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Express the given angles in the form 180°n+A and find the coordinates of P(x,y) where P is the intersection of the terminal side of the angle and the unit circle.
a) -240° = -180*2+120
Note: -240 = +120
P(x,y) = ?
x = cos(120) = -1/2
y = sin(120) = sqrt(3/2)
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b) 1320 = 180*7 + 60
x = cos(60) = 1/2
y = sin(60) = sqrt(3)/2
===========================
Cheers,
stan H.