TRIGONOMETRY - e9SCHOOL

03 April 2020

TRIGONOMETRY

In trigonometry, trigonometric ratios are derived from the sides of a right-angled triangle. These include ratios such as sine, cosine, tangent.
These are defined for acute angle A below:


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\maroonC{\text{adjacent}}\blueD{\text{opposite}}\purpleC{\text{hypotenuse}}\sin (A) = \dfrac{\blueD{\text{opposite}}}{\purpleC{\text{hypotenuse}}}\cos (A) = \dfrac{\maroonC{\text{adjacent}}}{\purpleC{\text{hypotenuse}}}\tan (A) = \dfrac{\blueD{\text{opposite}}}{\maroonC{\text{adjacent}}}ABC