Calculating Area Triangle ABC.
a = 7-5
a = 2 units.
b = 180-60-45
b = 75°
sin75 = 7/c
c = 7.2469332629 units.
c is the side length of the triangle ABC, equilateral triangle.
Area triangle ABC is;
0.5*7.2469332629²sin60
= 22.7409791417 square units.
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