Obj: Find trigonometric ratios using right ?

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Obj Find trigonometric ratios using right ?s
(4.12.2).
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What is a trigonometric ratio?

• a ratio of the lengths of sides of a right ?

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Parts of a trig ratio from ?A
hypotenuse
adjacent
90
opposite
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What is SOH-CAH-TOA?

• Sin A Opp/Hyp
• Cos A Adj/Hyp
• Tan A Opp/Adj

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How do you use the trig table?

• Ex Tan 73 _____
• Step 1) Locate 73 in the angle column
• Step 2) Go across the tangent column
• Step 3) Read the value 3.2709
• Ex Cos A 0.8660
• Step 1) Go across cosine column
• Step 2) Locate 0.8660
• Step 3) Read the value 30 in the angle column