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Mathematical

 Right Angle Trig Formulae A, B, C = Angles        a, b, c = Distances              a              b              a   sin A = ---  , cos A = ---  , tan A = ---            c              c              b     Area = (ab)/2      1.     Given a and b, find A, B and c             a                           b2   tan A= --- = cotB, c=√a2+b2 = a√1+ ---           b                           a2    2.      Given a and b, find A, B and b             a                                a2   sin A= --- = cosB, b=√(c+a)(c-a) = c√1- ---           c                                c2    3.      Given A and a, find B, b and c                              a   B = 90o-A, b=a cotA, c= ---                           sinA      4.      Given A and b, find B, a and c                            b   B=90o-A, a=b tanA, c= ---                         cosA      5.      Given A and c, find B, a and b       B=90o-A, a=c sinA, b=c cosA

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