In ∆ABC, which ratio equals cos C? A. a - b B. c - b C. a - b D. c - a
In ∆ABC, which ratio equals cos C?
A. a
-
b
B. c
-
b
C. a
-
b
D. c
-
a
Answer: D.
Step-by-step explanation:
In triangle ∆ABC, the ratio that equals cos C is (c - a)
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