P = 100°, R is equal to P, Q is x . find the value of x.
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*27. If positive p, q, r satisfy pqr = 1, then for equation 2px 2qx 2rx -+- pq+p+1 qr+q+1 rp +r+1 x equals : (A) p + q + r (B)1 (D) (C) Independent of p, q&r
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x=160degree
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