Higher. Ch 19 Pythagoras, Trigonometry and Vectors. Bilton

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1 Higher Ch 19 Pythagoras, Trigonometry and Vectors Bilton

2 Questions Q1. Triangle ABC has perimeter 20 cm. AB = 7 cm. BC = 4 cm. By calculation, deduce whether triangle ABC is a right angled triangle. (Total for question = 4 marks) Q2. ABCD is a trapezium. AD = 10 cm AB = 9 cm DC = 3 cm Angle ABC = angle BCD = 90

3 Calculate the length of AC. Give your answer correct to 3 significant figures.... (Total for Question is 5 marks) Q3. Calculate the length of AB. Give your answer correct to 1 decimal place.

4 ... (Total for Question is 3 marks) Q4. The diagram shows the marking on a school playing field. Diagram NOT accurately drawn The diagram shows a rectangle and its diagonals. Work out the total length of the four sides of the rectangle and its diagonals m (Total for Question is 5 marks) Q5. PQR is a right-angled triangle.

5 Work out the size of the angle marked x. Give your answer correct to 1 decimal place.... (Total for question = 2 marks) Q6. Triangle ABC has a right angle at C. Angle BAC = 48. AB = 9.3 cm. Calculate the length of BC. (Total for question = 3 marks) Q7. The diagram shows a rectangular framework.

6 The framework is made from 5 metal rods. The metal rods have a weight of 0.9 kg per metre. Work out the total weight of the framework. Give your answer, in kg, correct to 3 significant figures.... kg (Total for question = 4 marks) Q8. The diagram shows a quadrilateral ABCD.

7 drawn Diagram NOT accurately AB = 16 cm. AD = 12 cm. Angle BCD = 40. Angle ADB = angle CBD = 90. Calculate the length of CD. Give your answer correct to 3 significant figures cm (Total for Question is 5 marks) Q9.

8 ABCD is a square with a side length of 4x M is the midpoint of DC. N is the point on AD where ND = x BMN is a right-angled triangle. Find an expression, in terms of x, for the area of triangle BMN. Give your expression in its simplest form.... (Total for Question is 4 marks) Q10. Here is a right-angled triangle.

9 Diagram NOT accurately drawn (a) Work out the length of AB. Inderpal is making two mirrors.... cm (3) Diagram NOT accurately drawn Mirror A is in the shape of a circle. This mirror has a diameter of 60 cm.

10 Mirror B is in the shape of an isosceles triangle. This mirror has base 48 cm and height 32 cm. Inderpal buys metal strips to put around the edge of each mirror. The metal strip is sold in lengths of one metre. Each one metre length of metal strip costs 5.68 (b) Work out the total amount Inderpal pays. You must show all your working.... (4) (Total for Question is 7 marks) Q11. * Here is part of a field. This part of the field is in the shape of a trapezium. A farmer wants to put a fence all the way around the edge of this part of the field. The farmer has 50m of fence. Does he have enough fence? You must show all your working.

11 (Total for question = 5 marks) Q12. Diagram NOT accurately drawn ABC is a triangle. AB = 8.7 cm. Angle ABC = 49. Angle ACB = 64. Calculate the area of triangle ABC. Give your answer correct to 3 significant figures.

12 cm 2 (Total for Question is 5 marks) Q13. ABC is a triangle. (a) Work out the area of triangle ABC. Give your answer correct to 3 significant figures. (b) Work out the length of the side AB. Give your answer correct to 3 significant figures cm 2 (2)... (3)

13 (Total for Question is 5 marks) Q14. * The diagram shows a ladder leaning against a vertical wall. The ladder stands on horizontal ground. The length of the ladder is 6 m. The bottom of the ladder is 2.25 m from the bottom of the wall. A ladder is safe to use when the angle marked y is about 75. Is the ladder safe to use? You must show all your working. (Total for Question is 3 marks) Q15.

14 ABC is a right-angled triangle. D is a point on AB. Angle ACD = 30 AD = 10.4 cm DB = 5.2 cm AC = 18 cm Work out the size of the angle marked x. Give your answer correct to 1 decimal place.... (Total for question = 4 marks) Q16.

15 ABCD is a parallelogram. DC = 5 cm Angle ADB = 36 Calculate the length of AD. Give your answer correct to 3 significant figures.... (Total for Question is 4 marks) Q17.

16 Calculate the length of PR. Give your answer correct to 3 significant figures.... (Total for Question is 3 marks) Q18. ABC is a triangle. BC = 12.3 cm Angle ABC = 73 The area of triangle ABC is 50 cm 2. Work out the length of AC. Give your answer correct to 3 significant figures.

17 ... (Total for Question is 6 marks) Q19. OAYB is a quadrilateral. (a) Express in terms of a and b.... X is the point on AB such that AX : XB = 1 : 2 (1)

18 and = 5a b *(b) Prove that (4) (Total for Question is 5 marks) Q20. APB is a triangle. N is a point on AP. (a) Find the vector, in terms of a and b.... B is the midpoint of AC. M is the midpoint of PB. (1) * (b) Show that NMC is a straight line.

19 (4) (Total for Question is 5 marks) Q21. * OBPA is a quadrilateral. Y is the point on AP such that AY : YP = 2 : 1 Show that is parallel to the vector 7a + 3b (Total for question = 4 marks)

20 Q22. OAB is a triangle. M is the midpoint of AB. OMN is a straight line such that ON : OM = 3 : 2 Find, in terms of a and b, an expression for the vector. Write your answer in its simplest form.... (Total for question = 4 marks)

21 Q23. Diagram NOT accurately drawn OAB is a triangle. = a = b (a) Find in terms of a and b.... (1) P is the point on AB such that AP : PB = 3 : 1 (b) Find in terms of a and b.give your answer in its simplest form.... (3) (Total for Question is 4 marks) Q24. OACB is a parallelogram.

22 D is the point such that The point N divides AB in the ratio 2:1 (a) Write an expression for in terms of a and b.... (3) *(b) Prove that OND is a straight line. (3) (Total for Question is 6 marks) Q25.

23 Calculate the value of x. Give your answer correct to 3 significant figures.... (Total for Question is 3 marks) Q26. LMN is a right-angled triangle. MN = 9.6 cm. LM = 6.4 cm. Calculate the size of the angle marked x. Give your answer correct to 1 decimal place. Diagram NOT accurately drawn

24 (Total for Question is 3 marks)

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