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law of sin and cos

concept quiz

Law of Sines a/SinA=b/SinB=c/SinC
Ambiguous Case for SSA
Two h<a<b
none a<h or a<=b
area of oblique triangle 1/2bcSinA or 1/2abSinC or 1/2acSinB
when to use sin or cos AAS ASA SSA (sin) SSS SAS
oblique triangles triangles have no right angle
a2 b2+c2-2bcCosA
b2 a2+c2-2acCosB
c2 a2+b2-2abCosC
Cos A b2+c2-a2/2bc
CosB a2+c2-b2/2ac
Cos C a2+b2-c2/2ab
Herons Area Formula square root of s(s-a)(s-b)(s-c)
s equals (a+b+c)/2
Created by: morganF