Find a cartesian equation of the plane Π₁ passing through the points with coordinates (2, −1, 3), (4, 2, -5) and (−1, 3, −2). The plane Π₂ has cartesian equation 3x – y + 2z = 5. Find the acute angle between Π₁ and Π₂. Find a vector equation of the line of intersection of the planes Π₁ and Π₂.
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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