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Further Mathematics Paper 2, May/June. 2008  
Questions: 1 2 3 4 5 6 7 8 9 Main
General Comments
Weakness/Remedies
Strength











Question 2

If sin A = 3/5 and cos B = 15/17, where A is obtuse and B is acute, find the value of cos(A + B)

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Observation

 This question was also well attempted. They were able to apply the correct formula. However, many of them missed the marks when they failed to recall that the cosine of an obtuse angle is negative

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