Mathematics · May / June 2020 · Paper 42 · Question 4
0580
As printed in the paper
The question as text
S Q R 150 m NOT TO SCALE 120 m P 55° 25° 45° The diagram shows two triangles.
Read automatically from the paper; the printed page above is exact.
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4(a)[3]
65.4 or 65.36 to 65.37 [3]
M1 for 1502 + 1202 – 2 × 150 × 120 cos 25
A1 for 4270 or 4272 to 4273
4(b)[4]
125 or 124.7 to 124.8 [4]
B1 for [angle S =] 80
M2 for 150sin55 sin their 80
or M1 for sin their 80 sin55 = oe 150 RS
4(c)[3]
10 400 or 10 410 to 10 440 nfww [3]
M1 for 1 120 150sin25 2 × × oe
M1 for 1 150 × × their (b) sin45 oe 2
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