sister ,we can use the law of sines. since we have the angle of elevation and assume the wall makes a right angle with the ground, our angle opposite the ground is 180-[90+23=67
belt is 0.86 less than jacket b=j-0.86 add 0.86 to both sides b+0.86=j sub b+b+0.86=82.78 2b+0.86=82.78 minus 0.86 from both sides 2b=81.92 divid both sides by 2 b=40.96
