Arccosine
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Definition of Arccosine
Arccosine is the inverse function of cosine. It is also written as arccos or cos^{1}.
If y = cos x, then x = arccos y.
Examples of Arccosine

or
This means that the angle 30^{0} has cosine equal to .
Video Examples: Arccos Tnverse Trig Function
Solved Example Clockple on Approximate
Ques:
Choices:
A. 0.3B. 0.2
C. 0.5
D. 0.6
Correct Answer: D
Solution:

Step 1: Recall that cos(arccos x) = x, for  1 ≤ x ≤ 1.
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