IB skill practice

Use vector products in geometric proofs

Use dot and cross products to justify geometric relationships.

Paper 1, Paper 2 5 marks Difficulty 3

Use vector products in geometric proofs - diagram reading

In a vector proof, \(|\mathbf{a}|=12\), \(|\mathbf{b}|=8\), and \(\sin\theta=1/3\). Enter \(|\mathbf{a}\times\mathbf{b}|\), the area of the parallelogram formed by the two vectors.

AI writing feedback

How would you answer this question in your own words? The AI will analyse your response and give feedback on reasoning, evidence, and expression.

Login required
0 words