Warm-up: Find the missing sides of the triangles.
Jul 08, 2015
Warm-up:Find the missing sides of the triangles.
Expanding with Special Triangles:
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
The Three Ratios:
ASine Ratio- compares ______ to ______
Cosine Ratio- compares ______ to ______
Tangent Ratio- compares ______ to _______
Abbreviations: sine = _____ cosine = _____ tangent = _____
Here's how to remember…
A
Writing RatiosEx. 1) Find the following trigonometry ratios.a) sin A =
b) cos E =
c) cos C =
d) tan A =
e) tan D =
Assignment:
#8 SOH-CAH-TOA Ratios WS
Finding Missing SidesEx. 2) Solve for x.
35°
20x
Finding Missing SidesEx. 3) Solve for x.
42°
9
x
Finding Missing SidesEx. 4) Solve for x.
73°18 x
Finding AnglesHow can we find the angle if we have the sides?
Finding Missing AnglesEx. 5) Solve for x.
x°
18
31
Finding Missing AnglesEx. 6) Solve for x.
x°
8
14
Assignment:
#9 8.3 and 8.4 WS (Workbook p. 401, 403)Skip 10-12 on 8.3