Transcript 8-3 Trigonometry - Treynor Schools

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8-3
Trigonometry
SOH-CAH-TOA
SOH:
sin 𝑥 =
𝑂𝑝𝑝𝑜𝑠𝑖𝑡𝑒
𝐻𝑦𝑝𝑜𝑡𝑒𝑛𝑢𝑠𝑒
cos 𝑥 =
𝐴𝑑𝑗𝑎𝑐𝑒𝑛𝑡
𝐻𝑦𝑝𝑜𝑡𝑒𝑛𝑢𝑠𝑒
tan 𝑥 =
𝑂𝑝𝑝𝑜𝑠𝑖𝑡𝑒
𝐴𝑑𝑗𝑎𝑐𝑒𝑛𝑡
CAH:
TOA:
Problem 1: Writing Trigonometric Ratios
What are the sine, cosine, and tangent
ratios for angle T?
What are the sine, cosine, and tangent
ratios for angle G?
Problem 2: Using a Trigonometric Ratio to
Find Distance
Find the value of w:
DAY 2
SOH-CAH-TOA
If you know the sine, cosine, or
tangent ratio for an angle, you can use
an inverse to find the measure of an
angle.
−1
−1
−1
𝑠𝑖𝑛 , 𝑐𝑜𝑠 , 𝑜𝑟 𝑡𝑎𝑛
Problem 3: Using Inverses