Mathematics · Oct / Nov 2022 · Paper 21 · Question 22
0580
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The question as text
y x 360° 1 0 – 1
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22(a)[2]
Correct sketch 1 1 1 1 0.5 0.5 0.5 0.5 0 0 0 0 0 0 0 0 50 50 50 50 100 100 100 100 150 150 150 150 200 200 200 200 250 250 250 250 300 300 300 300 350 350 350 350 -0.5 -0.5 -0.5 -0.5 -1 -1 -1 -1 Correct sketch to go through (0, 1), (360, 1) and (180, –1) [2]
To go through (0, 1) and close to (360, 1) and reasonably close to (180, –1)
B1 for correct cosine curve shape through (0, 1)
22(b)[2]
120, 240 [2]
B1 for each or for two values with sum of 360
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