Question

HELP!! what is the value of x in this figure?

5


`5 √(2)`


`5 √(3)`


`(10 √(3) )/(3)`
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Answer 1

Check the picture below.

Also check your Unit Circle for the cosine of 30°, if you don't have a Unit Circle yet, this is a good time to get one, you'll need it, you can find many online.