Cambridge AssessmentCANDIDATENAMECENTRECANDIDATENUMBERNUMBERADDITIONAL MATHEMATICS0606/12Paper 1February/March 20232 hoursYou must answer on the question paper.No additional materials are needed.INSTRUCTIONS.Answer all questions.Use a black or dark blue pen.You may use an HB pencil for any diagrams or graphs.Write your name,centre number and candidate number in the boxes at the top of the page.Write your answer to each question in the space provided.Do not use an erasable pen or correction fluid.Do not write on any bar codes.You should use a calculator where appropriateYou must show all necessary working clearly;no marks will be given for unsupported answers from acalculator.Give non-exact numerical answers correct to 3 significant figures,or 1 decimal place for angles indegrees,unless a different level of accuracy is specified in the question.INFORMATIONThe total mark for this paper is 80.The number of marks for each question or part question is shown in brackets ]This document has 16 pages.DC(PQ/CT312456/2©UCLES2023[Turn over2Mathematical Formulae1.ALGEBRAQuadratic EquationFor the equation ax2+bx+c=0,2aBinomial Theoremwhere n is a positive integer andArithmetic seriesGeometric series2.TRIGONOMETRYIdentitiesFormulae for△ABCba2=b2+c2-2bccosAUCLES 20230606W12/FM/231 Find the exact values of k such that the straight line y=1-k-x is a tangent to the curvey=kx+x+2k.[4UCLES 20230606W12/FM/23[Turn over