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Trigonometry
Use the three forms below:
Adjacent (a) Hypotenuse (b) Cosine (A)
Opposite (b) Hypotenuse (c) Sine (B)
Opposite (b) Adjacent (a) Tangent (C)

Angle Diagram
Definition: assigns a name to the ratio of the length of the sides of a right triangle.

Rules of trigonometry:
1. a + b = 90 (and) a + b + c = 180
2. A2 + B2 = C2 (Pythagorean Theorem)
3. sin(A) = b/c (and) cos(A) = a/c
4. sin(A) = cos(90 - A) and vice-versa
5. a = sin(A) * c (and) a = cos(B) * c
6. a/A and b/B may be reversed
7. c/C is always the long side, 90° C

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