184 students are male
40/100= x/460
you are going to divide 460 by 100 and you'll get 4.6
then you'll want to multiply 4.6 by 40 and you'll get your answer
The cofunction of cos is sin(90-x)
90 degrees is equal to PI/2
The cofunction becomes sin(PI/2 - 2PI/9)
Rewrite both fractions to have a common denominator:
PI/2 = 9PI/18
2PI/9 = 4PI/18
Now you have sin(9PI/18 - 4PI/18)
Simplify:
Sin(5PI/18)
Just multiply 11 1/8 by 2 and u should get 22.25 so the length of UV is 22.25 inches