A-Level
EDEXCEL
Mathematics & Further Mathematics
October 2023
6 Marks
QP-202310-Mathematics-UP3 · Question 3
Question (excerpt):
8 3. (a) Using the identity for cos (A + B) , prove that cos 2A ≡ 2 cos 2 A – 1 (2) (b) Hence, using algebraic integration, find the exact value of 8 2 12 (5 4cos 3 )d π π x x (4) _______________…
8 3. (a) Using the identity for cos (A + B) , prove that cos 2A ≡ 2 cos 2 A – 1 (2) (b) Hence, using algebraic integration, find the exact value of 8 2 12 (5 4cos 3 )d π π x x (4) _______________…
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