Given vectors u = ⟨–5, 1⟩ and v = ⟨8, 6⟩, which statement is true for u and v?

Use the dot product to determine the angle: u · v = (−5)(8) + (1)(6) = −40 + 6 = −34. Since the dot product is negative, the angle between the vectors is obtuse. Therefore, the true statement is that the vectors form an obtuse angle.

AI-written and checked against the verified answer.