Answer:
52.8 degree
Step-by-step explanation:
x²=1.9²+2.5²
x²=9.86
x = 3.14 this is SQ
using the sine rule :
sin90/3.14 = sinx/2.5
cross multiply
after cross multiply if you are allowed to use a calculator insert shift sin
you only use this when you want to find the unknown sine angle
