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

Find all solutions 2cos(theta)+1=0 write in radians in terms of pi.
asked 232k views
3 votes
Find all solutions
2cos(theta)+1=0
write in radians in terms of pi.

asked
User Zhe Hu
by
9.1k points

1 Answer

3 votes
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
answered
User Jet Blue
by
7.6k points
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