Proving of Sine and Cosine Rule.
- Author:
- lalaman963
This is a project that proves Sine and Cosine rules.
a_1 is a / sin ( angle bc )
b_1 is b / sin ( angle ac )
c_1 is c / sin ( angle ab )
a_2 is a^2
b_2 is b^2 + c^2 - 2bc cos ( angle bc )
You can move the points A, B and C, and as a, b, c change in length, ab, bc, ac change in angle,
Theoretically for Sine rule, a_1, b_1 and c_1 are equal; and for cosine rule, a_2 and b_2 remains the same.
a_1, b_1 and c_1 remains constant, showing that the Sine rule is accurate.
a_2 and b_2 remains constant too, proving the cosine rules.