Trigonometric identities Flashcards
1
Q
equation of unit circle
A
x^2 +y^2 = 1
2
Q
identity derived from cosθ = x and sinθ= y and pythagorus
A
sin^2 θ + cos^2 θ = 1
3
Q
identity such that cosθ≠0 for all values of θ,
A
tanθ ≡ sinθ/cosθ
4
Q
A