KP1998
01.07.2020 •
Mathematics
What is the length of the altitude of the equilateral triangle below
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Ответ:
E 4√3
Step-by-step explanation:
there are so many way you can use, i show you two if them
1. using phytagoras theorem
a² = 8² - 4²
a² = 64 - 16
a² = 48
a =√48
a = √16 x √3
a = 4√3
2. Using sinus trigonometry
sin x = opp/hyp
sin 60° = a/8
(√3)/2 = a/8
a = 8 x (√3)/2
a = 4√3
Ответ: