Answer:
x= 31.0°
Explanation:
for this you have to use SohCahToa
as 9cm is opposite the x° this makes the 9cm the opposite
the longer side is always the hypotenuse but we don't need to worry about that side in this case
this means that the 15cm is the adjacent
from the SohCahToa we can find out whether we use sin, cos or tan
the sides we have are a (adjacent) and o ( opposite)
this means we use tan
as we are finding an angle we use tan^-1
tan^1(9/15)=30.96375653
so our angle is 31.0°