Edexcel Mathematics October 2020 · Paper 1 · Question 11 · ExamRizz

ExamRizzEdexcel MathematicsMathematics

October 2020 · Paper 1 · Question 11 · 8 marks

11. y C2 BA OC1 x Figure 3 Circle C1 has equation x2 + y2 = 100 Circle C2 has equation (x − 15 )2 + y2 = 40 The circle s meet at points A and B as shown in Figure 3. (a) Show that angle AOB = 0.635 radians to 3 significant figures, where O is the origin. (4) The region shown shaded in Figure 3 is bounded by C1 and C2 (b) Find the perimeter of the shaded region, giving your answer to one decimal place. (4) 31 32 33

Lesson: Equations of a Straight Line