Yes Virginia, there is a Tangent Law!
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EXPONA: I am surprised to have found the two most important trig so easily.
TANGENT: Oh sure. Sine and Cosine are important. Since their laws are taught in high school.
TANGENT: I have a law too! I'll be over here, hoping that students will acknowledge I exist...
EXPONA: (makes a face)
SINE: Sorry for that Tangent.