SOLUTION: In a triangle containing ine obtuse angle, the lengths of the sides are 3,4 and x. what is the value of x Options A. 8 B 7 C 6 D 5

Algebra ->  Triangles -> SOLUTION: In a triangle containing ine obtuse angle, the lengths of the sides are 3,4 and x. what is the value of x Options A. 8 B 7 C 6 D 5       Log On


   

Question 486433: In a triangle containing ine obtuse angle, the lengths of the sides are 3,4 and x.
what is the value of x
Options
A. 8 B 7 C 6 D 5
Answer by richard1234(7193) About Me  (Show Source):
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C) 6.

D) 5 produces a right triangle; A) 8 and B) 7 do not produce non-degenerate triangles. Also, 3^2 + 4^2 < 6^2, a qualification for being obtuse (which comes from the law of cosines).