correct angle by reduction √a use double angle formula √m correct subn in formula √ca correct sin value √ca QUESTION 4: [10] In the figure below, the circle with centre has points and on its O, A, B, C, D E circumference. Reflex angle and . as shown: Determine the size of the following angles (WITH REASONS): : (4) correct angle O1 √a correct reason √a correct angle A √a correct reason √a : (2) correct reason √a correct angle C1+2 √a : (4) correct reasons (x2) √a √a correct angle C1 √a correct angle C2 √a
√a correct angle by reduction √m use double angle formula √ca correct subn in formula √ca correct sin value QUESTION 4: [10] In the figure below, the circle with centre O, has points A, B, C, D and E on its circumference. Reflex angle and . as shown: Determine the size of the following angles (WITH REASONS): : (4) √a correct angle O1 √a correct reason √a correct angle A √a correct reason : (2) √a correct reason √a correct angle C1+2 : (4) √a √a correct reasons (x2) √a correct angle C1 √a correct angle C2
Grade%2012%20Mid-Year%20Preliminary%20Paper%202%202018%20-%20FINAL%20MEMO.docx