Find the area of an isosceles triangle with a side side of 2cm and an angle at the base of 15 degrees.

From the current school curriculum in geometry, we know that the angles at the base of this type of triangles will be the same.

Let us determine what the angle that is located between the lateral sides will be equal to, when from the condition of the task we know that the angle at the base is 15 °:

180 – 15 – 15 = 150.

Let us determine how many square centimeters the area of our triangle will express when it is known that its side is 2 centimeters:

1/2 * 2 * 2 * 1/2 = 1.

Answer: The area is 1 cm2.