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Trigonometric Limits - California State University, …
www.csun.eduSince at θ = π/2 the denominator of cos2 ... The left and the right limits are equal, thus, lim t→0 sint t = 1 – Typeset by FoilTEX – 16. Proof B2. By multiplying numerator and denominator with (1 + cosx) lim x→0 1 − cosx x = lim x→0 (1 − cosx) x