(Solved): Find the angle between vectors for the following. (Enter the smallest positive angle for each in de ...

Find the angle between vectors for the following. (Enter the smallest positive angle for each in degrees.) (a) \( \overrightarrow{\mathbf{D}}=(-5.0 \hat{\mathbf{i}}-2.0 \hat{\mathbf{j}}) \mathrm{m} \) and \( \overrightarrow{\mathbf{A}}=(-2.0 \hat{\mathbf{i}}+2.0 \hat{\mathbf{j}}) \mathrm{m} \) (b) \( \overrightarrow{\mathbf{C}}=(4.0 \hat{\mathbf{i}}-6.0 \hat{\mathbf{j}}+\hat{\mathbf{k}}) \mathrm{m} \) and \( \overrightarrow{\mathbf{B}}=(-8.0 \hat{\mathbf{i}}+7.0 \hat{\mathbf{j}}+8.0 \hat{\mathbf{k}}) \mathrm{m} \)