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13 cards from this deck
Using trig ratios to find unknown sides or angles
Two pieces of information
sinθ=oppositehypotenuse\sin θ = \frac{\text{opposite}}{\text{hypotenuse}}sinθ=hypotenuseopposite
cosθ=adjacenthypotenuse\cos θ = \frac{\text{adjacent}}{\text{hypotenuse}}cosθ=hypotenuseadjacent
tanθ=oppositeadjacent\tan θ = \frac{\text{opposite}}{\text{adjacent}}tanθ=adjacentopposite
Sine = Opposite ÷ Hypotenuse
Cosine = Adjacent ÷ Hypotenuse
Tangent = Opposite ÷ Adjacent
Longest side, opposite the right angle
When you know two sides and want to find an angle
4 decimal places
Degree mode (not radians)
adjacentcosθ\frac{\text{adjacent}}{\cos θ}cosθadjacent
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