Mark Scheme from old P4, P5, P6 and FP1, FP2, FP3 papers

Shape + horiz. axis B1 3 B1 (2) (b) Area = ( r2 d( = ( 9 cos22( d( use of ( r2 M1 = use of cos4( = 2cos22( – 1 M1 = ( dM1, A1 = subst. and M1 = or 0.103 A1 (6) (c) r sin ( = 3 sin ( cos 2( = 3 cos ( cos 2( – 6 sin ( sin 2( diff. r sin ( M1, A1 = 0 ( 6 cos2( – 3 cos ( – 12 sin2( cos ( = 0 use of = 0 M1 6 cos2( – 3 cos ( – 12(1 ... ................
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