Find the value of cos−1(cos13π6).
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![Differentiation of cos inverse x (cos^-1 x) - Teachoo [with Video]](https://d1avenlh0i1xmr.cloudfront.net/56bf8298-6bd6-409d-838f-8b568118e176/slide8.jpg "Differentiation of cos inverse x (cos^-1 x) - Teachoo [with Video]")
Differentiation of cos inverse x (cos^-1 x) - Teachoo [with Video]
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![Differentiation of cos inverse x (cos^-1 x) - Teachoo [with Video]](https://d1avenlh0i1xmr.cloudfront.net/f076bde2-875b-45cc-9e96-0fec0173a441/slide7.jpg "Differentiation of cos inverse x (cos^-1 x) - Teachoo [with Video]")
Differentiation of cos inverse x (cos^-1 x) - Teachoo [with Video]
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The Inverse Cosine Function
