4.11.1 Vectors (A-level only)

Given that $∣3i+kj+2k∣=7|3\mathbf{i} + k\mathbf{j} + 2\mathbf{k}| = 7$

Find the two possible values of $k$

[3]

Given that $∣3i+kj+2k∣=7|3\mathbf{i} + k\mathbf{j} + 2\mathbf{k}| = 7$

Find the two possible values of $k$

[3]

4.11.1 Vectors (A-level only) Questions