A Level Mathematics Questionbanks

a) cos4x sin4x ( (cos2x sin2x)(cos2x + sin2x) M1. But sin2x + cos2x = 1 B1. So cos4x sin4x ( cos2x sin2x A1 [3] b) (cos2 : 5 + 2tan2 = 4sec2 M1 A1. 1 + tan2 ( sec2 5 + 2tan2 = 4(1 + tan2 ) M1. tan2 = A1 ................
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