PreCalc Formulas

sin²(θ) + cos²(θ) =

sin²(θ) + cos²(θ) =

1

1-cos²(θ)=

sin²(θ)

1-sin²(θ)=

cos²(θ)

1 + tan²(x) =

sec²(x)

1 + cot²(u) =

csc²(u)

csc²(u)-1 =

cot²(u)

sec²(u) - 1 =

tan²(u)

sin(-x) =

-sin(x)

cos(-x) =

cos(x)

tan(-x) =

-tan(x)

sin(π/2 - u) =

cos(u)

cos(π/2 - u) =

sin(u)

cot(π/2 - u) =

tan(u)

tan(π/2 - u) =

cot(u)

csc(π/2 - u) =

sec(u)

sin(A + B)

sinA cosB + cosA sinB

sin(A - B)

sinA cosB - cosA sinB

cos(A + B)

cosA cosB - sinA sinB

cos(A - B)

cosA cosB + sinA sinB

sin2A=

2sinAcosA

cos2A=

cos2A−sin2A

2cos²a—1

1-2sin²u

b^m x bⁿ

b^m+n

BOTNO

Bigger on top no y asymptote but there is a slant asymptote.

BOBO

Bigger on bottom y=0

EATSDC

exponents are the same divide coefficients