If the three sides of the triangle are 3, 1-2a and 8, then the value range of a is () A. - 6 < a < - 3B. - 5 < a < - 2C. 2 < a < 5D. A < - 5 or a > - 2
According to the meaning of the title: 8-3 < 1-2a < 8 + 3 〈 5 < 1-2a < 11 〉 4 < - 2A < 10 〉 - 5 < a < - 2, so choose B
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