In the MOT triangle, the angle is O = 90 *, the angle is T = 30 *. From the angle O, the median OC
August 12, 2021 | education
| In the MOT triangle, the angle is O = 90 *, the angle is T = 30 *. From the angle O, the median OC is drawn to the side of the MT. MO = 13 cm. Find the length of the median OK.
In a right-angled triangle, the leg opposite an angle of 30 ° is equal to half the hypotenuse. Hence ОМ = ½ ТМ.
TM = 2 OM = 2 * 13 = 26 (cm).
Because OK is the median, then TC = KM.
So KM = ½ TM = ½ * 26 = 13 (cm).
Consider the OCM triangle. In it KM = OM. Therefore, the triangle is isosceles.
∠М = 90 ° – 30 ° = 60 °.
∠MKO = ∠KOM = (180 ° – 60 °): 2 = 60 °.
So the OKM triangle is equilateral.
OK = KM = OM = 13 cm.
Answer: the median length is OK 13 cm.
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