Answer:
3/8=0.375
Step-by-step explanation:
3^x-1×27^x+1
___________
81^x
81^x+x-1+1
_________
81^2x
_____
81^2x-1x
81^1x
sinx/6=sin90/19
sinx=6sin90/19
x=arcsin(6sin90/19
x=18 degrees