If the three sides of the triangle ABC are a, B, C and satisfy the following conditions: A2 + B2 + C2 + 338 = 10A + 24B + 26c, then the height of the longest side of the triangle ABC is () A. 8B. 125C. 6013D. 245
∵ A2 + B2 + C2 + 338 = 10A + 24B + 26c, ∵ A2 + B2 + C2 + 338-10a-24b-26c = 0, ∵ a2-10a + 25 + b2-24b + 144 + c2-26c + 169 = 0, ∵ a-5) 2 + (B-12) 2 + (C-13) 2 = 0, ∵ a = 5, B = 12, C = 13. ∵ A2 + B2 = C2. ∵ triangle ABC is a right triangle
RELATED INFORMATIONS
- 1. In the acute angle △ ABC, if ∠ C = 2 ∠ B, the value range of CB is______ .
- 2. In the acute triangle ABC, ∠ C = 2 ∠ B, then the value range of ∠ B is ()
- 3. In the triangle ABC, if the angle a ∈ [π / 4, π / 3], and its area is s, then the value range of the vector ab · vector AC
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- 7. The substitution elimination method is used to solve the equations 2x + 5Y = - 5,3x-y = 18
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- 9. Substitution of {3x-5y = 0,2x-3y = 1 into elimination method
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- 11. In triangle ABC, the corresponding sides of angle a, angle B and angle c are a, B and C respectively, and a & # 178; + B & # 178; + C & # 178; + 338 = 10A + 24B + 26c. Try to judge the shape of triangle ABC and prove it. (practice in the chapter of Pythagorean theorem, find the solution ~)
- 12. If three sides ABC of triangle ABC satisfy (a-5) & sup2; + (B-12) & sup2; + C & sup2; = 26c-169, the shape of ABC is judged
- 13. It is known that in △ ABC, the opposite sides of ∠ a, B and C are a, B and C respectively, and satisfy the following conditions: A & # 178; + B & # 178; + C & # 178; + 338 = 10A + 24B + 26c, Try to judge the shape of △ ABC
- 14. If three sides a, B, C of △ ABC satisfy a & # 178; + B & # 178; + C & # 178; + 338 = 10A + 24B + 26c, then s △ ABC=
- 15. If ABC is known to be the trilateral length of △ ABC and the absolute value of A-B plus the absolute value of B-C = 0, then ABC is a triangle
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