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gayaneshka [121]
3 years ago
7

What is the length of the altitude of the equilateral triangle below?30°613613a60" 90" 60"313 313O A. 3O B. 9O D. 3N3o E. 108o F

. 81

Mathematics
2 answers:
bearhunter [10]3 years ago
6 0

Answer:

B)9

Step-by-step explanation:

APEX ANSWER

vodka [1.7K]3 years ago
5 0
The answer is B. 9
Use cosine rule. In this case, I am using SOH and the right triangle:
sin 60°= a ÷ 6 root 3
(6 root 3)(sin 60°)= a
a=9
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