One of the acute angles of the triangle is 60 degrees. The sum of the smaller leg
August 7, 2021 | education
| One of the acute angles of the triangle is 60 degrees. The sum of the smaller leg and the hypotenuse = 3.6 dm. Find the length of the smaller leg and hypotenuse.
In a right-angled triangle, the legs form a right angle (90 °), and the side opposite to the right angle is called the hypotenuse. If there is an angle of 60 ° in a right-angled triangle, then the hypotenuse is equal to the two smaller legs of the triangle. Let us denote the smaller leg by the letter a, the hypotenuse by the letter c:
a + c = 3.6 dm;
Let us express the hypotenuse through the smaller leg:
c = 2a;
a + 2a = 3.6 dm;
3a = 3.6 dm;
a = 3.6 / 3 = 1.2 dm – the smaller leg of the triangle;
c = 2a = 1.2 * 2 = 2.4 dm – the hypotenuse of the triangle.
Answer: 1.2 dm; 2.4 dm.
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