Is this math problem right?Collection of common programming errors
mathematics Retrieving original web address
discoverer: anonymous I’m comparing answers to a friend’s and he has this…. 4/tan90 4/(1/0) (4 x 0)/1 4
shouldn’t tan90 be undefined?

The problem is fine. The solution is wrong.
tan90 is undefined.  You are right tan90 is undefined as the tangent function is asymptotic.
Therefore 4 / tan90 would be considered a mathematical error
 4/[invalid imput] 4/1 divided by (1/0) 4/1 TIMES 0/1 4(0) / 1
0

You should copy another person’s homework.

in this problem is not correct.final ans is 0.
Source of the problem： answers.yahoo
Web site is in building
Originally posted 20131109 23:19:26.