1. The problem statement, all variables and given/known data Use the Cauchy-Schwarz inequality to prove that for all real values of a, b, and theta (which ill denote as θ), (a cosθ + b sinθ)2 ≤ a2 + b2 2. Relevant equations so the Cauchy-Schwarz inequality is | < u,v>| ≤ ||u|| ||v|| 3. The attempt at a solution I'm having a difficult time figuring out what is my u and my v. Sorry for the stupid question. Thank you for any guidance.