![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
If we know that the three sides of △ ABC are 5, 13 and 12, then the area of △ ABC is () A. 30b. 60C. 78d. Not sure
∵ 52 + 122 = 132, ∵ triangle is right triangle, ∵ length is 5, 12 sides are right sides, ∵ triangle area = 12 × 5 × 12 = 30
In the triangle ABC, the angle c is equal to 90 degrees. If Tana is equal to 5 / 12 and ab is equal to 26, what is the ABC of the s triangle
If a: B = 5:12, C = 26, then s RT triangle ABC =?
If the absolute value of (a-5) & sup2; + B-12 + C & sup2; - 26c + 169 = 0, then △ ABC is?
A. A right triangle with a hypotenuse
B. A right triangle with the hypotenuse of B
C. Right triangle with hypotenuse C
D is not a right triangle
The absolute value of (a-5) & sup2; + B-12 + C & sup2; - 26c + 169 = 0
We get a = 5, B = 12, C = 13
Choose: C, right triangle with C as hypotenuse
RELATED INFORMATIONS
- 1. If three sides a, B, C of triangle ABC satisfy the condition: A ^ 2 + B ^ 2 + C ^ 2 + 338 = 10A + 24B + 26, then the height of the longest side of the triangle is___
- 2. The three sides a, B and C of triangle ABC satisfy the relation a ^ 2 + B ^ 2 + C ^ 2 + 338 = 10A + 24B + 26c. What triangle is it?
- 3. In the triangle ABC, AB * BC = 3, and the area of the triangle ABC is between √ 3 / 2 and 3 / 2, then the value range of the angle between AB and BC AB and BC are vectors
- 4. If 1 / X-1 / y = 3, what is the value of 5x + 2xy-5y / x-4xy-y Write process online = urgent!
- 5. As shown in the figure, in the equilateral triangle ABC, the midpoint D is the midpoint of the BC side. Take ad as the side to make the equilateral triangle ade. Calculate the degree of angle CAE
- 6. As shown in the figure, in equilateral △ ABC, point D is the midpoint of BC side, and ad is taken as the edge to make equilateral △ ade. (1) find the degree of ∠ CAE; (2) take the midpoint F of AB side, connect CF and CE, and try to prove that quadrilateral afce is rectangular
- 7. How to compare the size of real number and imaginary number? For example, if you want to compare the sizes of 1 + 2I and 2, you can compare the modules of two numbers, that is, compare the sizes of 4 + 1 and 4 under the root?
- 8. If a times 4 / 15 = B divided by 4 / 15 = C, ABC is greater than 0, then (?) is less than (?) is less than (?)
- 9. If a and B are positive numbers, and a ≠ B, the proof is A2B + B2A > A + B
- 10. An algorithm for comparing the sizes of two real numbers a and B is as follows: ditto
- 11. Given that the side length of △ ABC is a, B, C, and (B-C) 2 + (2a + b) (C-B) = 0, try to determine the shape of △ ABC
- 12. In triangle ABC, the opposite sides of angles a, B and C are a, B and C respectively, and a > b > C, if a & # 178;
- 13. In the triangle ABC, if the angle ACB is a right angle, BC = 3, AC = 4, and P is a point on AB, then the product of the distances from P to AC, AB is the maximum___________
- 14. The number of chickens is half of that of ducks, the number of geese is one third of that of chickens, and the number of geese is a fraction of that of ducks
- 15. One half (1 / 2) of a is equal to one eighth (1 / 8) of B. B is ()% of A There should be explanation, formula, number, etc
- 16. [3b-2] & sup2; + | 2a-b-3 | = 0, what are the values of A.B
- 17. If 2A = 3b is not equal to 0, then (a + b) is better than B =?
- 18. When 2A minus 3b, a plus 2B equals 3
- 19. One half to one fifth equals x and one tenth
- 20. X to a quarter is half to three tenths