
В треугольнике авс угол с прямой сн высота найдите тангенс угла асн


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Task: Find the tangent of angle A in triangle ABC, where angle A is opposite side a and the height from point C to side AB is h.
To find the tangent of angle A in triangle ABC, we can use the formula for tangent in a right-angled triangle, which is the ratio of the length of the side opposite the angle to the length of the side adjacent to the angle.
Given: - Side a = 4 - Side b = 6 - Side c = 9 - Height h = ?
Solution:
Using the given information, we can calculate the height h using the formula for the area of a triangle:Area of triangle ABC = (1/2) * base * height
We can solve for the height h using the area of the triangle and the length of side b.
Area of triangle ABC = (1/2) * b * h
Now, we can calculate the area of the triangle using Heron's formula:
Area of triangle ABC = sqrt(s * (s - a) * (s - b) * (s - c))
Where s is the semi-perimeter of the triangle: s = (a + b + c) / 2
Let's calculate the semi-perimeter s: s = (4 + 6 + 9) / 2 = 19 / 2 = 9.5
Now, we can calculate the area of the triangle: Area of triangle ABC = sqrt(9.5 * (9.5 - 4) * (9.5 - 6) * (9.5 - 9))
Area of triangle ABC ≈ 9.9216
Using the area of the triangle, we can solve for the height h: 9.9216 = (1/2) * 6 * h h = (2 * 9.9216) / 6 h ≈ 3.3072
Now that we have the height h, we can find the tangent of angle A using the given information:
tan(A) = Opposite / Adjacent tan(A) = h / a tan(A) ≈ 3.3072 / 4 tan(A) ≈ 0.8268
Therefore, the tangent of angle A in triangle ABC is approximately 0.8268.


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