فرمول های مشتق (Derivative) شامل توابع مثلثاتی (Trigonometric Function)، در ریاضیات (Mathematics)
\[ {d \over {dx}}\left( {\sin x} \right) = \cos x
\]
\[ {d \over {dx}}\left( {\cos x} \right) = - \sin x
\]
\[ {d \over {dx}}\left( {\tan x} \right) = {\sec ^2}x
\]
\[ {d \over {dx}}\left( {\sec x} \right) = \sec x\tan x
\]
\[ {d \over {dx}}\left( {\cot x} \right) = - {\csc ^2}x
\]
\[ {d \over {dx}}\left( {\csc x} \right) = - \csc x\cot x
\]
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Thomas' Calculus Early Transcendentals - George B. Thomas Jr., Maurice D. Weir, Joel R. Hass - 13th Edition
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