laqu33n021
16.12.2020 •
Mathematics
What is the value of n?
А. 47°
B. 85°
С. 81°
D. 38°
Solved
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Ответ:
B. 85
Step-by-step explanation:
A Triangle is 270 degrees so just add the two given numbers , subtract them from 27, and you get 85.
Ответ:
.. AREA = (1/2)*a*b*sin(C)
For an equilateral triangle of side s, you have
.. a = b = s
.. C = 60°
Put these values into the formula.
.. AREA = (1/2)×s²×sin(60°)
.. AREA = s²×(√3)/4 . . . . . . . . . . . area of equilateral triangle given side length