Posted by Dho on Thursday, April 15, 2010 at 1:10am.
Sin theta = 4/5
i got 53.1 as an answer but on my answer sheet is also has 126.9
How do i get that 126.9?

Trig  drwls, Thursday, April 15, 2010 at 4:56am
Both answers are correct. sine is positive in the first and second quadrant, and the sine of an angle equals the sine of its supplementary angle.
180.00  53.13 = 126.87