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natulia [17]
3 years ago
6

What are the coordinates of the terminal point determined by t=20pi/3?

Mathematics
1 answer:
attashe74 [19]3 years ago
3 0

Answer:

(- 1/2 , √3/2)

Step-by-step explanation:

t=20π/3

t' = 20π/3 - 6π = 2π/3   (120°) ... 2nd quadrant

If we start from (1,0) of unit circle, the coordinate of terminal point (x,y)

OF/OE = - cos 60° = x / 1 =  - 1/2

FE/OE = sin 60° = y/1  = √3/2

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