If the designer wants to create a lehenga using a single hue, he would use a monochromatic harmony or scheme. This harmony involves the use of a single base hue, along with variations in tints, tones, and shades.
If vector \( \mathbf{a} = 3 \hat{i} + 2 \hat{j} - \hat{k} \) \text{ and } \( \mathbf{b} = \hat{i} - \hat{j} + \hat{k} \), then which of the following is correct?