Visual meaning of 'cosine'? - learn with images, example in daily life

Visual illustration of cosine: In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse. Symbol: cos

noun

In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse. Symbol: cos

"In Mr. Jones' math class, Sarah learned that the cosine of a 30-degree angle in a right triangle is the length of the adjacent side divided by the length of the hypotenuse. "