Trigonometry
Sin and Cos Comparison
Relationship between sin and cos
- High school
- about 3 min
- 3 of 11 in the family
Not started
Key properties
- • cos(x) = sin(x + π/2)
- • Both have period 2π
- • sin = cos when x = π/4 + nπ
- • Yellow dots: intersections
Cosine is sine shifted π/2 (90°) to the left. On the unit circle, cos corresponds to x-axis, sin to y-axis.