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Let A and B be two sub-sets of R x R, defined as follows: A = {(a,b) : a,b in R " and " tan^(-1)a + cot^(-1)b = pi/2} and B={(a,b) : a,b in R " and " sin^(2) a + cos^(2)b =1}, then |
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Answer» `A CAP B = {{a,a) : a in R}` |
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