TALIYAHYOUNG1217 TALIYAHYOUNG1217
  • 11-03-2022
  • Mathematics
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Question 6 of 10
What is the length of the altitude of the equilateral triangle below?
30"
6
6
a
60° 90°
3
60"
3
O
A. 613
O
B. 1
C. 6
Ο Ο O
D. 3
E. 3/5
O
F. 27

Respuesta :

lilythlermal
lilythlermal lilythlermal
  • 11-03-2022

Answer:

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

Step-by-step explanation:

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