memorize!!
sin²(θ) + cos²(θ) - Pythagorean Identities
= 1
cot(θ) - Reciprocal Identities
1/tan(θ)
csc(θ) - reciprocal identities
1/sin(θ)
sec(θ) - reciprocal identities
1/cos(θ)
tan²(θ) + 1 - pythagorean identities
= sec²(θ)
1 + cot²(θ) - pythagorean identities
= csc²(θ)
tan(θ) - quotient identies
= sin(θ)/cos(θ)
cot(θ) - quotient identities
= cos(θ)/sin(θ)
y = sin(x) - derivative
y’ = cos(x)
y = tan(x) - derivative
y’ = sec²(x)
y = sec(x) - derivative
y’ = sec(x)tan(x)
y = cos(x) - derivative
y’ = -sin(x)
y = cot(x) - derivative
y’ = -csc²(x)
y = csc(x) - derivative
y’ = -csc(x)cot(x)