Mathematics · Oct / Nov 2020 · Paper 22 · Question 19
0580
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9 cm 8 cm x° 100° NOT TO SCALE
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19(a)[3]
61.1 or 61.08 to 61.09... [3]
M2 for [sin x =] 8sin100 oe or better 9 9 8
or M1 for = oe sin100 sin x
19(b)[3]
11.7 or 11.66 to 11.67 [3]
M2 for 1 × × × 9 8 sin(180 100 − − their (a) oe ) 2
or M1 for 180 – 100 – their (a)
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