Final answer:
The sine (sin), cosine (cos), and tangent (tan) of an angle in a right triangle can be found using the lengths of the sides of the triangle.
Step-by-step explanation:
In a right triangle, the sine (sin), cosine (cos), and tangent (tan) of an angle are defined in terms of the lengths of the sides of the triangle. Let's say the angle we are interested in is theta (θ). The sine of theta (sin θ) is equal to the length of the side opposite theta divided by the length of the hypotenuse. The cosine of theta (cos θ) is equal to the length of the side adjacent to theta divided by the length of the hypotenuse. And the tangent of theta (tan θ) is equal to the length of the side opposite theta divided by the length of the side adjacent to theta.