In triangle ABC, angle C is 90 *, cos B = 0.5, AB = 16. Find BC.
| September 10, 2021 | education
Explanation: The cosine of an angle is equal to the ratio of the adjacent side to the hypotenuse. CosB = BC / AB. AB and the cosine of the angle are given to us in the problem statement. Substitute the corresponding values and calculate the BC value.
cosB = 1/2;
BC / AB = 1/2;
BC / 16 = 1/2;
BC = 8 cm.
Answer: 8 centimeters.
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.
