In a right-angled triangle, the leg is 15 cm and its projection onto the hypotenuse is 9 cm.
| February 1, 2021 | education
The task is simple, it can be solved in just a couple of steps. To find out the answer, you must first create a geometric problem. We compose:
Given:
ΔABС,
B = 90 °,
AB = 15,
ВD height at the base,
BP = 9.
Decision:
AC = AB² / AD = 225/9 = 25;
ВС² = DС * АС = 16 * 25;
BC = 20;
cosA = 15/25 = 3/5;
sinA = 20/25 = 4/5.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
