In triangle ABC, angle C is 90, BC = 2, sinA = 0.4. Find AB.
| March 5, 2021 | education
From the condition of the problem, we know that the angle C is 90 degrees, that is, we have a right-angled triangle.
Knowing the length of one of the legs of a right-angled triangle and the value of the sine of the opposite angle, we can find the length of the hypothesis. There is a formula for this:
c = a / sinA
Where c is the hypotenuse of a right-angled triangle, in our case c = AB
a – leg, in our case a = BC = 2
sinA = 0.4
Substitute the existing values and get:
AB = c = a / sinA = 2 / 0.4 = 0.8
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.
