Frequency: The definition of a triangle is a shape with three angles and three sides. … A geometric figure having three angles and three sides. What is triangle in your own words? A triangle has three sides, three vertices, and three angles. The sum of the three interior angles ofRead More →

The trigonometric ratios can be found by looking at the ratios of a right triangles sides. Sin is opposite:hypotenuse, cos is adjacent:hypotenuse, and tan is opposite:adjacent. What does sin Cos tan tell us? The cosine (often abbreviated “cos”) is the ratio of the length of the side adjacent to theRead More →

A “safe triangle” (shown below) has been described as the preferred site of insertion. This is the triangle bordered by the anterior border of the latissimus dorsi, the lateral border of the pectoralis major muscle, a line superior to the horizontal level of the nipple, and an apex below theRead More →