1. Verify that:
Radian Mode, View Domain [ 
]
, View Range [-1, 1]
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2. Verify that: 
Radian Mode, View Domain [ 
]
, View Range [0, 1]
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3. Verify that: 
= 
Radian Mode, View Domain [ 
]
, View Range [0, 10]
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4. Verify that: (tan2 x + 1)(cos2 x - 1) = -tan2 x
Radian Mode, View Domain [ 
]
, View Range [-10, 0]
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5. Verify that: tan4 x = tan2 x sec2 x - tan2 x
Radian Mode, View Domain [ 
]
, View Range [0, 10]
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6. Verify that: tan x + cot x = sec x csc x
Radian Mode, View Domain [ 
]
, View Range [-10, 10], DrawDot Mode
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7. Verify that: sec y + tan y = cos y / (1-sin y)
Radian Mode, View Domain [ 
]
, View Range [-10, 10], DrawDot Mode
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8. Verify that: 
Radian Mode, View Domain [ 
]
, View Range [-10, 10], DrawDot Mode
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