The height of a right-angled triangle divides the hypotenuse into segments 18cm and 32cm long. Find the area of a triangle?
September 26, 2021 | education
| Let the value of the angle DАС of the triangle ABC be equal to X0, then the angle АСD = (90 – X) 0.
Angle ACB = 90, then angle BCD = (90 – (90 – X) = X0.
The acute angles of the right-angled triangles ACD and BCD are equal, then the triangles are similar in acute angle.
Then in similar triangles AD / CD = CD / BD.
CD ^ 2 = AD * BD = 32 * 18 = 576.
CD = 24 cm.
The length of the hypotenuse AB = AD + BD = 32 + 18 = 40 cm.
Determine the area of the triangle ABC.
Savs = AB * CD / 2 = 40 * 24/2 = 480 cm2.
Answer: The area of the triangle is 480 cm2.
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