mykamorrow
24.02.2020 •
Mathematics
What is the value of x?
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Ответ:
X =71. The reason is because the interior angles of a triangle add up to 180. 180-38=142. It is an isosceles triangle so the bottom two angles are equal. Divide 142/2 to get 71. ;)
Step-by-step explanation:
Ответ:
19.08
Step-by-step explanation:
c² = a² + b² - 2ab×cos(C)
a=10
b=22
C=60
cos(60) = 0.5
c² = 10² + 22² - 2×10×22×cos(60) =
= 100 + 484 - 20×22×0.5 = 584 - 20×11 = 584 - 220 =
= 364
c = sqrt(364) ≈ 19.08