Mathematics Grade 11 November 2011 Paper 1 Zip -

x = 4 − 5 ± 25 + 24 ​ ​

∠ B + ∠ D = 18 0 ∘

∠ A + ∠ C = 18 0 ∘

In the diagram below, \(ABCD\) is a cyclic quadrilateral. If \(ngle A = 60^ rc\) and \(ngle C = 120^ rc\) , find the measure of \(ngle B\) . (Insert diagram of cyclic quadrilateral) Solution mathematics grade 11 november 2011 paper 1 zip

x = 2 a − b ± b 2 − 4 a c ​ ​