The average national basketball association player is over 6 feet tall. the average horse jockey is shorter than 5 1/2 feet tall. this is because height provides nba players with:

Basketball is a type of sport that requires aggressive behavior and prolonged stamina. The height is a major advantage because he can sprint faster from between two sides of the court. Also, it would be much easier to shoot because he has a higher reach to the ring. This is also useful for steals and blocks. Basically, the height is a requirement because of longer limbs.

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.