Chapter 5 Introduction to Deductive GeometryChapter 5 Introduction to Deductive GeometryPAGE 122PAGE 123 PAGE 11411.(? sum of ?)∴?ABC? 3(21?) ? 12? ? 51??ACB? 2(21?) 9? ? 51?∵?ABC? ?ACB
Chapter 5 Introduction to Deductive GeometryChapter 5 Introduction to Deductive GeometryPAGE 118PAGE 119 PAGE 11417.In ?ACD AC ? CD > AD(triangle inequality)In ?ABC AB ? BC > AC(triangle
Chapter 9 Applications of TrigonometryChapter 9 Applications of TrigonometryPAGE 96PAGE 95 PAGE 751.?Trigonometricratio0?30?45?60?90?cos ?1(or )0tan ?0(or )1Undefinedsin ?0(or )1
Chapter 2 More about PercentagesChapter 2 More about PercentagesPAGE 38PAGE 39 PAGE 351.BThe required percentage? ? 100? 46(corr. to the nearest integer)
Chapter 2 More about PercentagesChapter 2 More about PercentagesPAGE 40PAGE 41 PAGE 3531.CLet x be the number of bacteria 2 hours ago. (corr. to 1 d.p.)∴There are 66 115.7 bacteria 2 hour
Chapter 7 Introduction to ProbabilityChapter 7 Introduction to ProbabilityPAGE 30PAGE 29 PAGE 111.C
Chapter 5 Pythagoras TheoremChapter 5 Pythagoras TheoremPAGE 104PAGE 103 PAGE 9315.(a)In DABD= (Pyth. theorem)= = 49 cm2∴= = 7 cm∴= (7 ′ 2) cm= (b)Area of DABC= =
Chapter 5 Introduction to Deductive GeometryChapter 5 Introduction to Deductive GeometryPAGE 120PAGE 115 PAGE 11417.In ?ABD C is the mid-point of BD and AB ? BC. Prove that 3AB ? AD.
Chapter 8 MensurationChapter 8 MensurationPAGE 50PAGE 51 PAGE 3510.Let r cm be the radius of the sphere.∴The radius of the sphere is 3 cm.Volume of the sphere
Chapter 7 Introduction to ProbabilityChapter 7 Introduction to ProbabilityPAGE 8PAGE 9 PAGE 119.The probability of winning 100 000 ? The probability of winning 20 000 ? ∴The expected va
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