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If tan (π/4 + x) + tan (π/4 − x) = a, then tan2 (π/4 + x) + tan2 (π/4 − x) =(a) a2 + 1(b) a2 + 2(c) a2 − 2(d) None of these |
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Answer» If tan (π/4 + x) + tan (π/4 − x) = a, then tan2 (π/4 + x) + tan2 (π/4 − x) = (a) a2 + 1 (b) a2 + 2 (c) a2 − 2 (d) None of these |
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