What is the value of x?

A right triangle is shown with a right angle in the lower left corner. The top left angle measures 60 degrees. The lower right angle measures 30 degrees. The left leg is labeled x. The lower leg is labeled 15.
(1 point)
Responses

15 start root 3 end root
- image with description: 15 start root 3 end root - - incorrect

Start Fraction 15 over 2 End Fraction
- image with description: Start Fraction 15 over 2 End Fraction - - no response given

5 start root 3 end root
- image with description: 5 start root 3 end root - - no response given

Start Fraction 15 Start Root 2 End Root over 2 End Fraction

- image with description: Start Fraction 15 Start Root 2 End Root over 2 End Fraction - - no response given