[acos-asin-atan-atan2-computed.html]
[calc(acos(cos(30deg - 0.523599rad ) )) should be used-value-equivalent to 0deg]
expected: FAIL
[atan2(1rem + 1px - 1px, -1rem) should be used-value-equivalent to 135deg]
expected: FAIL
[atan2(1vh + 0px, -1vh + 0px) should be used-value-equivalent to 135deg]
expected: FAIL