61875
Trigonometry
- Ratios
- Sin: 180 - solution
- Cos: 360 - Solution
- Tan: +/- 180
- Cosine Rule
- a(2)=b(2)+c(2) - 2BCcosA
- a(2)=b(2)+c(2) - 2BCcosA
- Sine Rule
- a/sina = b/sinb = c/sinc
- FLIP FOR ANGLES
- a/sina = b/sinb = c/sinc
- Area of triangle
- 1/2ACsinB
- 1/2ACsinB
- Sin: 180 - solution
- Arcs and sectors
- Arc Length = rӨ
- Area of a sector = ½ × θ × r2
- Arc Length = rӨ
- HARD TRIG
- SIN GRAPH: Start a 0, cut at 180 and 360
- Cos Graph: Start at 1, through 90 and 270
- Tan Graph: Asymptotes at 90 and 270
- Cos/Sin - period of 360
- Tan - period of 180
- Identities
- Sin/cos = tan
- sin(2)+cos(2) = 1
- Sin/cos = tan
- SIN GRAPH: Start a 0, cut at 180 and 360
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