How does above value determine?
A new method, named as Precise-Rewritten method for trigonometric values has used to determine above values. For detail of the methods, one may refer any of the following books as reference book:
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Exact Values in Trigonometry: Five New methods, printed by CreateSpace Independent Publishing Platform or a Kindle version on the same written by Bhava Nath Dahal, 2016.
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Precise-Rewritten Method: Exact Values in Trigonometry, printed by CreateSpace Independent Publishing Platform or a Kindle version on the same written by Bhava Nath Dahal, 2016.
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Método Precisa-Rewritten: Os valores exatos dentro Trigonometria, Kindle version, written by Bhava Nath Dahal, 2016.
