Trigonometric Identities Page 6
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Trigonometric Identities
Derivatives of Trig Functions:
d
du
(sin u) = cos u
dx
dx
( 32 )
d
du
(cos u) = - sin u
dx
dx
( 33 )
d
du
2
(tan u) = sec
u
dx
dx
( 34 )
d
du
2
(cot u) = -csc
u
dx
dx
( 35 )
d
du
(sec u) = sec u tan u
dx
dx
( 36 )
d
du
(csc u) = - csc u cot u
dx
dx
( 37 )
References: Shenk, Calculus and Analytic Geometry
Boas, Mathematical Methods in the Physical Sciences
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