Illustrate the six trigonometric ratios: sine, cosine, tangent, cotangent, secant, and cosecant; and identify parts of a right triangle.
The mnemonic SOHCAHTOA can be used to remember how to compute trigonometric ratios.
SOH stands for Sine-Opposite-Hypotenuse which denotes the sine definition as
sin θ = opposite/hypotenuse.
CAH stands for Cosine-Adjacent-Hypotenuse which denotes the cosine definition as
cos θ = adjacent/hypotenuse.
TOA stands for Tangent-Opposite-Adjacent which denotes the tangent definition as
tangent θ =opposite/adjacent.
At the case of csc θ, sec θ, and cot θ, notice that these ratios are just the reciprocals of the trigonometric ratios sin θ, cos θ, and tan θ, respectively.
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Негізгі бет ILLUSTRATING THE SIX TRIGONOMETRIC RATIOS| G9 MATH QUARTER 4
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