The angle at the apex opposite to the base of an isosceles triangle is 30 degrees. The area of the triangle is 100. Find the side.
Since the triangle is isosceles, its sides are equal.
Let the side of the triangle be X cm.
Then the area of the triangle will be: S = X * X * Sin30.
100 = X2 * 1/2.
X2 = 200.
X = 10 * √2 cm.
Answer: The length of the side is 10 * √2 cm.
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.