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10 cards from this deck
Angle from horizontal upward to view object above
Angle from horizontal downward to view object below
They are equal (alternate angles)
Alternate angles on parallel horizontal lines
0°0°0° to 90°90°90°
tanθ=oppositeadjacent\tan \theta = \frac{\text{opposite}}{\text{adjacent}}tanθ=adjacentopposite
sinθ=oppositehypotenuse\sin \theta = \frac{\text{opposite}}{\text{hypotenuse}}sinθ=hypotenuseopposite
Know or need opposite and adjacent sides
Know or need opposite side and hypotenuse
Solve one triangle first for common side, then use in second
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