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No. The subject is way too esoteric. But "cotangent" does not refer to high-school level trigonometry.
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</math>
defined as follows: Let <math>\phi_1,...,\phi_n</math> be a local orthonormal [[coframe]] (i.e., a collection of locally defined 1-forms which are [[orthonormal]] with respect to the induced metric on the [[cotangent]] space). Then we define
defined as follows: Let <math>\phi_1,...,\phi_n</math> be a local orthonormal [[coframe]] (i.e., a collection of locally defined 1-forms which are [[orthonormal]] with respect to the induced metric on the <!--Don't wikilink this unless you know what you are doing-->cotangent space). Then we define
<math>
<math>