A Level Mathematics Questionbanks

2. a) cos2x + sin2x ( 1 ( cosA =, cosB = M1 A1. sin(A+B) ( sinA cosB + cosA sinB B1 = M1 A1 [5] b) cos2A ( 2cos2A 1 B1 = M1 A1 cao [3] 3. a) cos2 ( 2cos2 1 B1. M1. a2 = 2(b+1) A1 [3] b) cos2 ( 1 2sin2 B1. a = 1 2(b 2)2 M1 A1 ... ................
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