Law of Sines
Angles in a generic triangle
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The "Law of Sines" can be used to calculate the angles of a triangle.
The "Law of Sines" can be expressed as
a / sin A = b / sin B = c / sin C (1)
where
a, b and c = length of sides in triangle (m, ft ...)
A, B and C = angles in the triangle (degrees)
Law of Sines Calculator
This expression can also be handy:
sin 1/2 A = ((s - b)(s - c) / (b c))1/2 (2)
where
s = 1/2 (a + b + c)
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