Studied by 101 peopleReciprocal sinx
1/cscx
Reciprocal cscx
1/sinx
Reciprocal cosx
1/secx
Reciprocal secx
1/cosx
Reciprocal tanx
1/cotx
Reciprocal cotx
1/tanx
1 coat in the closet
1 + cot^2x = csc^2x
I tan in one second
1 + tan^2x = sec^2x
1 =
sin^2x + cos^2x
Quotient tanx
sinx/cosx
Quotient cotx
cosx/sinx
sin(-x)
-sinx
csc(-x)
-cscx
cos(-x)
cosx
sec(-x)
secx
tan(-x)
-tanx
cot(-x)
-cotx
cos(A + B)
cosAcosB - sinAsinB
cos(A-B)
cosAcosB + sinAsinB
sin(A+B)
sinAcosB+cosAsinB
sin(A-B)
sinAcosB - cosAsinB
tan(A+B)
(tanA+tanB)/(1-tanAtanB)
tan(A-B)
(tanA-tanB)/(1+tanAtanB)
sin2x
2sinxcosx
cos2x
cos^2x-sin^2x, 2cos^x-1, 1-2sin^2x
tan2x
(2tanx)/(1-tan^2x)
sin(A/2)
±√ (1-cosA)/2
cos(A/2)
±√ (1+cosA)/2
tan(A/2)
±√ (1-cosA)/(1+cosA) = (sinA)/(1+cosA) = (1-cosA)/sinA
Note
Flashcard