[khafra]

There is a common issue with limiting the angles in trig, and only requiring division with an integer or simple fraction solution: It provides a lot of help to the test-taker, based on their test-taking skills rather than their math skills.

If the test-taker can discard mistaken answers because they don't look like the kind of answer the test designer would choose, the test diverges from testing for the desired skills.

[rtkwe]

Yeah I remember doing that too. Sometimes you could eliminate all the other answers because they weren't in the right area or the wrong sign. It was also interesting to see how answers would often have one that would be your result if you missed a step or had some other smallish error in your work.