Precalculus - Trigonometric Identities
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(Even/odd id) csc (-t)
-csc t
Reciprocal identities
1/cos= sec 1/sin= csc 1/tan= cot
(Even/odd id) cot (-t)
-cot t
(Even/odd id) sin(-t)
-sin t
(Even/odd id) tan (-t)
-tan t
(Pythagorean I'd) Sin^2+cos^2
1
(Cofunction Identities) sin(π/2-t)
Cos t
(Quotient Id)cot
Cos/sin
(Cofunction identity) tan(π/2-t)
Cot t
(Cofunction identities) sec(π/2-t)
Csc t
(Pythagorean) 1+cot^2
Csc^2
Trig indentities can be used to:
Evaluate trig Functions Simplify trig expressions Develope addition trig id. Solve trig equations
(Cofunction identities) csc(π/2-t)
Sec t
(Cofunction identity) cos(π/2-t)
Sin t
(Quotient Id) tan
Sin/cos
(Cofunction identities) cot (π/2-t)
Tan t
(Even/odd id) cos (-t)
cos t
(Even/odd id) sec (-t)
sec t
(Pythagorean id) 1+tan^2
sec^2
