Find all solutions 2cos(theta)+1=0 write in radians in terms of pi.

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asked Jul 9, 2017 232k views

1 Answer

Jet Blue · Answer 1 · 2017-07-13T20:49:20+0000

As we know
cos theta-1= 0
cos theta = 1
Now Look at a graph of the cosine function
, and you will observe that cos theta = 1
at the points X = 0, and X = 2pi
hope it helps

Find all solutions 2cos(theta)+1=0 write in radians in terms of pi.

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