Asked by Anonymus
What are two solutions of cosx=2/3 between 0 ad 2pi?
Answers
Answered by
Damon
quadrant 1 and quadrant 4 are where the cosine is positive/
cos^-1 (2/3) = 48.2 degrees
and also 360 - 48.2
cos^-1 (2/3) = 48.2 degrees
and also 360 - 48.2
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