How do you find the exact value of cos 180 degrees - sin 180 degrees?

Emmanuel Pace

Emmanuel Pace

Answered

2022-07-18

How do you find the exact value of cos 180 degrees - sin 180 degrees?

Answer & Explanation

grocbyntza

grocbyntza

Expert

2022-07-19Added 25 answers

Within the unit circle, cosine provides the x coordinate of a point on the surface of the circle. Sine provides the y coordinate of a point on the surface of the circle.
At 180 , the point on the unit circle surface is (-1,0). So this means:
x = cos ( 180 ) = 1
y = sin ( 180 ) = 0
To find the exact value of cos ( 180 ) sin ( 180 )
-1-0=-1

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