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10 cards from this deck
They calculate angles from known trigonometric values.
The domain of arcsin(x) is [-1, 1].
The range of arccos(x) is [0, π].
If y = sin⁻¹(x), then x = sin(y).
sin⁻¹(-x) = -sin⁻¹(x).
d/dx (sin⁻¹(x)) = 1/√(1-x²).
The range of arctan(x) is (-π/2, π/2).
If y = cos⁻¹(x), then x = cos(y).
tan⁻¹(-x) = -tan⁻¹(x).
sin⁻¹(-0.5) = -π/6 by symmetry property.
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