Trig Cheat Sheet Definition of the Trig Functions Right triangle definition For this definition we assume that 0 2 p opposite sin hypotenuse q= hypotenuse csc opposite q=
The fundamental formulas of angle addition in trigonometry are given by sin(alpha+beta) = sinalphacosbeta+sinbetacosalpha (1) sin(alpha-beta) = sinalphacosbeta-sinbetacosalpha (2) cos(alpha+beta) = cosalphacosbeta
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