Mathematics · Oct / Nov 2022 · Paper 42 · Question 9
0580
As printed in the paper
The question as text
y x – 1 1 360° 0
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9(a)[2]
Correct sketch to go through (0, 0), and (360, 0) y 0 x 360º [2]
M1 for correct sine curve shape through the origin or for almost correct sketch fitting all tramlines but with an omission at either end or incorrect curvature in one place only
9(b)[3]
233.1 or 233.13… and 306.9 or 306.86 to 306.87 [3]
B2 for one correct angle
or M1 for sin x = –0.8 oe If 0 scored
SC1 for 2 reflex angles that add to 540 or two non- reflex angles that add to 180
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