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Angles and sides of the triangle
Triangle ABC has a circumference of 26 cm. Lengths of the sides are as follows: a = 11.2 cm; b = 6.5 cm. Arrange the interior angles in order of its size.
a, b, c
a, c, b
«
Correct result
b, a, c
b, c, a
c, a, b
c, b, a
Solution:
$a = 11.2 cm \ \\ b = 6.5 cm \ \\ c = 26-a-b = 8.3 \ cm \ \\ a > c > b => α > γ > β \ \\ \ \\ α = 97.616^\circ \ \\ β = 35.116^\circ \ \\ γ = 47.268^\circ \ \\$
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Following knowledge from mathematics are needed to solve this word math problem:
planimetrics
perimeter
triangle
angle
units
The Law of Sines
comparing
arithmetic
9th grade (14y)
high school
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triangle calculator
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