Derivatives of Trig functions

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Reminder of Trig identities & Unit circle values

# Reciprocal and quotient identities
tan(θ) = sin(θ) / cos(θ)
csc(θ) = 1/sin(θ)
sec(θ) = 1/cos(θ)
cot(θ) = 1/tan(θ)

Refer to previous note of all trig identities.

unit circle