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Limits using trig identities


Find limit, start subscript, x, \to, start fraction, pi, divided by, 4, end fraction, end subscript, start fraction, cosine, left parenthesis, 2, x, right parenthesis, divided by, cosine, left parenthesis, x, right parenthesis, minus, sine, left parenthesis, x, right parenthesis, end fraction.
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