How to turn 7/20 into a decimal

7/20 is 3.5/10, i know that isn't right but hear me out. 1/10 is .1, so 3.5/10 would be .35. Your answer is (0).35 :)

Hello! i hope this
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.