`BookProof.ChapterE4.cond_prob_sum` (θ : ℕ → ℝ) (s : ℕ) : Real.cos (θ s) ^ 2 + Real.sin (θ s) ^ 2 = 1

Initializing...

`BookProof.ChapterE4.cond_prob_sum` (θ : ℕ → ℝ) (s : ℕ) : Real.cos (θ s) ^ 2 + Real.sin (θ s) ^ 2 = 1 · Prove2Me