Circle Equations, Histograms, Trigonometry master 3.0 / 5 based on 2 ratings ? MathematicsTrigonometryGCSEEdexcel Created by: Elliot LinseyCreated on: 24-10-12 16:01 Circumference of Circle C=2πR or πd 1 of 16 Area of a Circle A=πR(squared) 2 of 16 Radius of a circle R=C/2π or R=(Square root of A/π) 3 of 16 Arc Length L=θ/360 x 2πR 4 of 16 Sector Area A=θ/360 x πR(squared) 5 of 16 Area of Triangle A=0.5 x a x b sinC (where a and b are lengths) 6 of 16 Theta area using Arc Length Formula θ=360 x L/2πR 7 of 16 Area of a Trapezium 0.5(a + b) x h (add up and down and times the distance between them!) 8 of 16 Frequency Density F.D. = Frequency/Class width 9 of 16 Frequency F = F.D. x Class width 10 of 16 Sine Rule SinA/a = SinB/b = SinC/c 11 of 16 Angle Cosine Rule CosA = b2 + c2 -a2/2bc 12 of 16 Side Cosine Rule a2 = b2 + c2 - (2bcCosA) 13 of 16 Sin, Cos, Tan Sin = O/H. Cos = A/H. Tan = O/A 14 of 16 . . 15 of 16 . . 16 of 16
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