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一、填空题 (本大题满分 4 8分 )本大题共有 12题 ,只要求直接填写结果 ,每题填对得 4分 ,否则一律得零分 .1 若复数z满足z(1+i) =2 ,则z的实部是.2 方程lgx +lg(x +3) =1的解x =.3 在△ABC中 ,a、b、c分别是∠A、∠B、∠C所对的边 ,若∠A =10 5° ,∠B=4 5° ,b =2 2 ,则c= .
First, fill in the blanks (this topic scored 4 out of 8 points) This topic has a total of 12 questions, only required to directly fill in the results, each question to fill in 4 points, otherwise all zero points. 1 if the complex z satisfies z (1+i ) = 2 , then the real part of z is the solution of the 2 equation lgx + lg(x +3) =1 x = .3 In △ABC, a, b, and c are ∠A, ∠B, and ∠C, respectively. On the side of the pair, if ∠A = 10 5°, ∠B = 4 5°, b = 2 2 then c = .