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If a, b,and c are three set and u is the universal set such that n(u)=1000,n(a)=300,n(b)=300 and n(a intersect b)=200.find n(a complement intersect b complement)

[tex]\frac{sin\theta}{1-cot\theta}+ \frac{cos\theta}{1-tan\theta}[/tex] is equal to (a)0 (b)1 (c)sin θ + cos θ (d)sin θ − cos θ