lim (cos²θ - sin²θ)/(cosθ - sinθ) = θ->π/4 (A) - 1

Last updated: 8/11/2022

lim (cos²θ - sin²θ)/(cosθ - sinθ) = θ->π/4 (A) - 1 (B) 0 (C) √2 (D) 1 (E)1/√2