[sin-cos-tan-computed.html]
  [calc(sin(pi * sibling-index()) should be used-value-equivalent to 0]
    expected: FAIL

  [calc(cos(pi * sibling-index()) should be used-value-equivalent to -1]
    expected: FAIL

  [calc(tan(pi * sibling-index()) should be used-value-equivalent to 0]
    expected: FAIL

  [calc(sin(180deg * sibling-index()) should be used-value-equivalent to 0]
    expected: FAIL

  [calc(cos(180deg * sibling-index()) should be used-value-equivalent to -1]
    expected: FAIL

  [calc(tan(180deg * sibling-index()) should be used-value-equivalent to 0]
    expected: FAIL