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                                                                        Mathematics  Form 3  Chapter 8 Loci in Two Dimensions     Mathematics  Form 3  Chapter 8 Loci in Two Dimensions
                         (c)                                               (c)    S             B              R                 (c)                                                  PT3 Standard Practice  8
                                                                                                                                                    A
                                                          S
                                                                                                                                                                              Section A
                                 R

                                                                                                                                      B                          E              1.  Answer: C
                                                                                                                                               Q
                                                                                 P                              Q                                                               2.  Locus of  X is a circle of radius 6 cm with
                                                                                                                                                           P
                                                          Q                                                                                                                       centre N. From the rectangle KLMN, locus
                                                                                                                                                                                  X is arc KQR.
                                 P                                                                                                                 R
                                                                                                                                                                                   Answer: D
                                                                                                                                            C               D
                                                                                                                                                                                3.  Answer: D
                                                                                 C              D              A
                                                                                                                                                                                4.  Answer: C

                       6.  (a)   D            P              C                                                                                                                  5.  Locus X is arc STU and locus Y is line OB.
                                                                                                                                                                                  Hence, the point of intersection is at A.
                                                                         7.  (a)                                                                                                   Answer: A
                                                                                                A
                                                                                         Q             Q
                                                                                 R                                                                                              6.  Locus X is line BD and locus Y is arc ADE at
                                                                                                                                                                                  centre B. Hence the point of intersection is
                               R                              S                                                                                                                   at D.

                                                                                                                                                                                   Answer: D

                                                                                                                                                                              Section B

                                                                                    B           D           C
                               A              Q              B                                  P                                                                               1.   (a)  An ant moves on a
                                                                                                                                                                                       straight horizontal
                                                                                                                                                                                       wire.
                         (b)                                                                                                                                                           Seekor semut bergerak
                                            Q                              (b)                                                                                                         pada wayar mendatar
                                                                               A                                  B                                                                    yang lurus.
                                                                                                                                                                                   (b)  The tip of a fan blade
                                                                                                                                                                                       that is spinning.
                                 A                     B                                                                                                                               Hujung bilah kipas yang
                                                                                                                                                                                       sedang berpusing.
                                                                                        Z
                                                                                                                                                                                   (c) The tip of hour hand
                                                                                                                                                                                       in a clock from 4
                      P                                           R                            Y      X                                                                                o’clock to 8 o’clock.
                                                                                                                                                                                       Hujung jarum jam dari
                                                                                                                                                                                       pukul 4 ke pukul 8.
                                                                                D               E                 C                                                                (d) A lift moving in tall
                                                                                                                                                                                       building.
                                 D                     C                                                                                                                               Sebuah lif bergerak
                                                                                                                                                                                       dalam bangunan tinggi.




                                            S



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                BOOKLET ANS MATH F3.indd   23                                                                                                                                                                    03/01/2020   10:21 AM
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