This alternate definition is more useful, however, since you can use it to relate lengths of arcs to angles. The length of an arc is is the radius r times the angle Î¸ where the angle is measured in radians. For instance, an arc of Î¸ = 0.3 radians in a circle of radius r = 4 has length 0.3 times 4, that is, 1.2.
About 17 percent of men treated for low T receive testosterone injections every 7 to 22 days. Testosterone levels peak two to three days after the injection and then slowly drop until the next dose of the hormone is given. There are also testosterone patches that men can use. These patches can be placed on areas of the body such as the back, stomach, upper arm, or thigh.
Testosterone Replacement Therapy. Testosterone is a major sex hormone produced in the testes of men. The pituitary gland is responsible for controlling the production of testosterone hormone. In the testes, luteinizing hormone binds to receptors on Leydig cells; this stimulates production and secretion of testosterone. Testosterone helps to develop the primary and secondary sexual characteristics in males.