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??? ????? ???? ??????? ??????? ?? ?????? ????? ????????? ????? ??????? ???. ???? ??? ??? ??? ?? ??? ???? ?? ?? ?????? ?????? ?????? ???? ?????????? ?? ?? ???? ?? ?? ???? ?? ?? ?????? ??? ? ???????? ????? ???. ?????? ??????? ?? ??? ?????????? ????.

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??????? ???? ????? ??????? ???:

\sin(a+b)=\sin(a)\cos(b)+\cos(a)\sin(b)

\cos(2a)=1-2\sin ^{2}(a)

\sin(2a)=2\sin(a)\cos(a)

?? ??????? ????? ???????? ?? ???? ?????? ???? ??? ???: ^[?]

{\frac {\sin(A)}{\sin(a)}}={\frac {\sin(B)}{\sin(b)}}={\frac {\sin(C)}{\sin(c)}}

??? ???? [ ?????? ]

???? ????? ?? ???? ???? ??? ???????? ?????? ??? ?? ?????????? ??? ?? ??????? ??? ?????????.
?? ??? ???? ?????? ?????????? ?? ????? ????? ????? ?? ? ????? ? ????? ?? ??? ?????? ???? ??? ?????? ?????.
?? ??? ???? ???????? ??????? ???? ? ???? ? ????? ? ?????? ?????? ???? ??????? ?? ?? ????? ???? ??? ? ?????? ?????? ???? ? ???? ???? ????????? ????? ? ????? ????? ????. ^[?]

????? [ ?????? ]

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???????? ????? ( ???? )? ???? ??? ???? ?? ????? ???? ??? ? ????? : ????? ???? ? ????? ?????? ?? ?????? ??????? ??? ?????? ?? ?????? ?. ??? ? ??? ? ???? ???-????-??-?

↑ Ben-Menahem, A. (2009). Historical encyclopedia of natural and mathematical sciences (1st ed.). Berlin: Springer. p. 559 . ISBN 978-3-540-68831-0 . Retrieved 21 December 2016 . 970 CE Abu al-Wafa al-Buzjani (940?998, Baghdad). Persian astronomer and mathematician.
↑ Sigfried J. de Laet (1994). History of Humanity: From the seventh to the sixteenth century . UNESCO. p. 931. ISBN 978-92-3-102813-7 . The science of trigonometry as known today was established by Islamic mathematicians. One of the most important of these was the Persian Abu' l-Wafa' Buzjani (d. 997 or 998), who wrote a work called the Almagest dealing mostly with trigonometry
↑ ≪????????? ???????? ??????? (?????????.?) ? ?????????≫ . ?????????? ?? ????-??-?? . ??????? zero width joiner character ?? |?????= ?? ?????? 37 ( ??? )
↑ Jacques Sesiano, "Islamic mathematics", p. 157, in Selin, Helaine; D'Ambrosio, Ubiratan (2000), Mathematics Across Cultures: The History of Non-western Mathematics, Springer, ISBN 1-4020-0260-2
↑ ?????? ???? ?? ?????? ???? ???????? ?????? ???????? ??????

????? ?? ????? [ ?????? ]

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???? ??????? ≪???????≫ ? ????????? ???? ????? .

[1] Ben-Menahem, A. (2009). Historical encyclopedia of natural and mathematical sciences (1st ed.). Berlin: Springer. p. 559 . ISBN 978-3-540-68831-0 . Retrieved 21 December 2016 . 970 CE Abu al-Wafa al-Buzjani (940?998, Baghdad). Persian astronomer and mathematician.

[Laet1994-2] Sigfried J. de Laet (1994). History of Humanity: From the seventh to the sixteenth century . UNESCO. p. 931. ISBN 978-92-3-102813-7 . The science of trigonometry as known today was established by Islamic mathematicians. One of the most important of these was the Persian Abu' l-Wafa' Buzjani (d. 997 or 998), who wrote a work called the Almagest dealing mostly with trigonometry

[3] ≪????????? ???????? ??????? (?????????.?) ? ?????????≫ . ?????????? ?? ????-??-?? . ??????? zero width joiner character ?? |?????= ?? ?????? 37 ( ??? )

[4] Jacques Sesiano, "Islamic mathematics", p. 157, in Selin, Helaine; D'Ambrosio, Ubiratan (2000), Mathematics Across Cultures: The History of Non-western Mathematics, Springer, ISBN 1-4020-0260-2

[5] ?????? ???? ?? ?????? ???? ???????? ?????? ???????? ??????

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