Use the given triangles to evaluate the expression. rationalize all denominators.
cos pi/6

There is no figure of the triangle, all that I know about it is
cos Pi/6 =√3/2

The answer is c because you turn 17.5% into a decimal which gives you .175 then you times that by $361.35 which gives you 63.23625 but then you round that which gives you 63.24. then you at 63.24 pulse 361.35 and you round it which gives you $425

D