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The side BC of a AABC is produced, such that D ison ray BC. The bisector of ZA meets BC in L asshown in Fig. 12. Prove that ZABC + LACD -2LALC4

Answer»

Because Angle A is bisected. Therefore, Angle BAL is equal to Angle LAC.Let angle bal = x.Therefore lac =x.Triangle alc is a right angle triangle.In this angle alc = 90 °Therefore angle acl =acl + lac +



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