In a right-angled triangle ABC C = 90 AB = 8cm sin A is equal to 0.4 Find the length of the BC leg.

From the current school curriculum in geometry, we well know that the sine of an angle can be determined through the ratio of the leg of a triangle, which will be opposite to it, to the hypotenuse of a given triangle.

Let us find out how many centimeters the length of the BC side will be determined, if from the condition of the task we know that the hypotenuse AB is equal to eight centimeters, and the sine of the angle A, which is opposite to BC, is 0.4:

BC / AB = sin A;

BC = 8 * 0.4 = 3.2.

Answer: The length of the BC side will be 3.2 cm.