Step-by-step explanation: Sine is one of the trigonometric functions that is equal to the ratio of the length of opposite side and the length of the hypotenuse. In this case, according to the given image, a sinus of angle 67 ° is required, which means that the sin 67° is equal to the ratio of the length of opposite, which is 12, and the length of the hypotenuse, which is 13.
