geo 8.3-4-notes_trig
DESCRIPTION
Introduction to the 3 trig functions.TRANSCRIPT
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Warm-up:Find the missing sides of the triangles.
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Expanding with Special Triangles:
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8.3-8.4 Trigonometric Ratios
Objective: Use the sine, cosine, and tangent ratios to find missing sides of a right triangle.
Standard: Geometry 19.0
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The Three Ratios:
ASine Ratio- compares ______ to ______
Cosine Ratio- compares ______ to ______
Tangent Ratio- compares ______ to _______
Abbreviations: sine = _____ cosine = _____ tangent = _____
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Here's how to remember…
A
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Writing RatiosEx. 1) Find the following trigonometry ratios.a) sin A =
b) cos E =
c) cos C =
d) tan A =
e) tan D =
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Assignment:
#8 SOH-CAH-TOA Ratios WS
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Finding Missing SidesEx. 2) Solve for x.
35°
20x
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Finding Missing SidesEx. 3) Solve for x.
42°
9
x
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Finding Missing SidesEx. 4) Solve for x.
73°18 x
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Finding AnglesHow can we find the angle if we have the sides?
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Finding Missing AnglesEx. 5) Solve for x.
x°
18
31
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Finding Missing AnglesEx. 6) Solve for x.
x°
8
14
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Assignment:
#9 8.3 and 8.4 WS (Workbook p. 401, 403)Skip 10-12 on 8.3