How do you solve #cos theta= -0.5#?
1 Answer
Nov 18, 2016
Arccos (-0.5)= 120 degrees
Explanation:
To solve this equation, you must find the unknown (theta).
Use the inverse of cosine (Arccos) to find the angle measurement (in degrees) of theta.
If you reference a unit circle or use a calculator, that would be 120 degrees.
Hope this helped!
