i) The terminal arm of θ contains the point P(x,y) where P is on the unit circle. If sinθ = 1/2 and tanθ >0, then what is the value of x?  option 1) √2 option 2)√2/2 option 3) √3 option 4) √3/2   ii) An angle in radians that is co-terminal with 30 degrees is? option 1)-5ℼ/6 option 2)7ℼ/6 option 3) -13ℼ/6 option 4) 25ℼ/6 please help and explain both parts i and ii I'm very confused!!

i) The terminal arm of θ contains the point P(x,y) where P is on the unit circle. If sinθ = 1/2 and tanθ >0, then what is the value of x? 

option 1) √2

option 2)√2/2

option 3) √3

option 4) √3/2

ii) An angle in radians that is co-terminal with 30 degrees is?

option 1)-5ℼ/6

option 2)7ℼ/6

option 3) -13ℼ/6

option 4) 25ℼ/6

please help and explain both parts i and ii I'm very confused!!