Steven has a counter that is yellow on one side and blue on the other. the counter is shown below: steven flips this counter 22 times. what is the probability that the 23rd flip will result in the counter landing on yellow side up? 22/23 1/2 1/4 1/22

In this situation, it is similar to a coin flip, so think about flipping a 2 sided chip, one side colored yellow the other blue, flipping the chip will result in a 50/50 chance for it to land on either side, so no matter how many times you flip it it will always be a 1/2 chance of it being on one of the sides

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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.