Math AA HL > Unit Circle, 5 Key Angles Coordinates > Flashcards
π/2
(0, 1)
π/3
(1/2, √3/2)
π/4
(√2/2, √2/2)
π/6
(√3/2, 1/2)
0
(1,0)
Quadrant I
(+, +)
Quadrant II
(-, +)
Quadrant III
(-, -)
Quadrant IV
(+, -)