trigon_0501 [12 marks]

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Details

Topic: Trigonometry and bearings (Trigonometry)
Marks: 12
Tier: Extended
Style: Structured
Calculator: Not tagged yet
Status: Usable
Source: trigonbearingclassified.pdf, page 14, 0580/41/M/J/10 (original Paper 4)
Import issues: None

Part	Answer	Mark	Guidance
(a)	201 (200.5…)	2	M1 for ½ × 26 × 24 × sin 40°
(b)	17.2 (17.20…)	4	M2 for 26² + 24² − 2 × 26 × 24 cos 40° (M1 for implicit form); A1 for 295.9…; A1
(c)	12.8 (12.77…)	4	B1 for angle BCD = 110°; M2 for BC = 24 sin 30° / sin 110° (M1 for implicit form); A1
(d)	8.21 (8.208…)	2	M1 for their BC × sin 40°