Answer:
original fraction =12/5
Step-by-step explanation:
let x = numerator
therefore
x+3/x-7+3 =15/8
x+3/x-4 =15/8
8(x+3)=15(x-4)
8x+24=15x-60
84=7x
84/7=x
12=x
therefore original fraction = 12/5
0.7999989281
x1 = cos^-1 (3/5)
x1= 53.13°
sin(53.13) = 0.7999989281
I think its Domain: -2,-1,3,-5,-8
Range:5,-2,5,-2,-2