Which equation can be used to solve for angle cap n in the triangle?

Use the Law of Cosines: the side opposite angle n, 6.2, satisfies c² = a² + b² − 2ab cos(n). Substituting the other sides gives 6.2² = 3.6² + 4.3² − 2(3.6)(4.3)cos(n), which is choice D.

AI-written and checked against the verified answer.