Formulas
General sinusoidal form (cosine works the same)
Vertical stretch
Horizontal center line
How wide one full cycle is
Factor out B first: A·sin(B(x − h))
Radians → degrees
Odd / Even symmetry
Cofunction identity
Quick tips
- →If the graph starts at the MIDLINE going up → use sin (no shift).
- →If it starts at the MAX → use cos (no shift). At the MIN → use −cos.
- →From MIN to MAX is half a period (multiply by 2 to get the full period).
- →Always factor B out of the inside before reading h: B·x − C → B(x − C/B).
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