how to get the angle of opposite = 9,5 and hyp = 151.5
In a right triangle, the sine of an angle is defined to be the ratio of the opposite side divided by the hypotenuse.
sin(A) = opp/hyp ---> sin(A) = 9.5/151.5 ---> sin(A) = 0.0627 ---> A = invsin( 0.0627)
---> A = 3.6°