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Answer: A. \(\frac{3}{2}\)

Answer: (A) \(\frac{3}{2}\)

\(\cos 55^\circ = \sin 35^\circ\) and \(\sin 62^\circ = \cos 28^\circ\) (complementary angles), so the first two terms are 1 each.

\(2\cos^2 60^\circ = 2 \times \frac{1}{4} = \frac{1}{2}\). Value \(= 2 - \frac{1}{2} = \frac{3}{2}\).

Doubtly AI · 27 Oct 2026 AI-generated · not yet verified Report
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