The picture shows a triangular island: A right triangle is shown with an acute angle equal to 45 degrees. The length of the side of the triangle opposite to the acute angle is a. The length of the side of the triangle adjacent to the acute angle is b. The length of the hypotenuse is c. Which expression shows the value of c? b over tan 45 degrees b over cos 45 degrees a cos 45° a tan 45°