Use the figure below. (a) Explain why ÎABC, ÎADE, and ÎAFG are similar triangles. (b) What does

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Use the figure below.
Use the figure below.
(a) Explain why ΔABC, ΔADE, and ΔAFG

(a) Explain why ΔABC, ΔADE, and ΔAFG are similar triangles.
(b) What does similarity imply about the ratios

BC DE :? and FG AB' AD AF

(c) Does the value of sin A depend on which triangle from part (a) is used to calculate it? Does the value of sin A change when you use a different right triangle similar to the three given triangles?
(d) Do your conclusions from part (c) apply to the other five trigonometric functions? Explain.

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