Practice problem
Evaluate limθ→01−cos2(θ)2θ(1+cos(θ))\lim_{\theta\to0}{\frac{1-\cos^2(\theta)}{2\theta(1+\cos(\theta))}}θ→0lim2θ(1+cos(θ))1−cos2(θ)
0
1
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3
Type a concept, like “slope” or “photosynthesis”.