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38 Terms
(tan identities) tan =
sin/cos
(tan and cot identities) cot=
cos/sin
(reciprocal identities) csc=
1/sin
(reciprocal identities) sec =
1/cos
(reciprocal identities) cot=
1/tan
(reciprocal identities) sin=
1/csc
(reciprocal identities) cos=
1/sec
(reciprocal identities) tan=
1/cot
sin(Ø/2) =
± √ (1-cos(Ø)/2)
cos(Ø/2)=
± √ (1+cos(Ø)/2)
tan(Ø/2) = (list all)
± √ ((1-cos(Ø)/(1+cos(Ø)) or sin(Ø)/1+cos(Ø) or 1-cos(Ø)/sin
sin²+cos²=
1
tan²+1=
sec²
1+cot²=
csc²
csc²-1=
cot²
sec²-1=
tan²
1=
sin²+cos²
(Even/Odd Formulas) sin(-Ø) =
-sin(Ø)
(Even/Odd Formulas) cos(-Ø) =
cos(Ø)
(Even/Odd Formulas) -sin(Ø)=
sin(-Ø)
(Even/Odd Formulas) cos(Ø)=
cos(-Ø)
(Even/Odd Formulas) tan(-Ø)=
-tan(Ø)
(Even/Odd Formulas) -tan(Ø)=
tan(-Ø)
(Even/Odd Formulas) csc(-Ø)=
-csc(Ø)
(Even/Odd Formulas) sec(-Ø)=
sec(Ø)
(Even/Odd Formulas) cot(-Ø)=
-cot(Ø)
(Even/Odd Formulas) -cot(Ø)=
cot(-Ø)
(even odd formulas) sec(Ø)=
sec(-Ø)
(even odd formulas) -csc(Ø)=
csc(-Ø)
sin(2Ø)=
2sin(Ø)cos(Ø)
tan(2Ø)=
2tan(Ø)/ 1-tan²(Ø)
cos(2Ø)= list all
1-2sin²(Ø) or 2cos²(Ø)-1 or cos²(Ø)-sin²(Ø)
2sin(Ø)cos(Ø) =
sin(2Ø)
cos²(Ø)-sin²(Ø) =
cos(2Ø)
1-2sin²(Ø) =
cos(2Ø)
2tan(Ø)/ 1-tan²(Ø) =
tan(2Ø)
2cos²(Ø)-1 =
cos(2Ø)