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Pythagorean theorom
a²+b²=c²
Trig Formulas
SO CA TOH
Sine law
a/sin A=b/sinb=c/csinC
Cosine law
c²=a²+b²-2abcosC
Area of triangle
1/2bh or 1/2absintheta
Circle
A=pir², c =2pir
Sphere
V=4(/3pi)r³ and SA=4pir²
Cylinder
V=pir²h, SA=2pir²+2pirh
Cone
V=(1/3pi)r²h, SA=pirār²+h²
Prisms
v=area of base x distance between bases
similar triangles
Ratios of corresponding sides are equal.