Trigonometry Ratio / Function Formula -

Trigonometric ratio / function:

The formulae (formula) for finding angle and sides of triangle can be easily remembered using the
sentence - Old Harry And His Old Aunt.
Sin (q) = Old/Harry = Opposite/Hypotenuse
Cos (q) = And/His = Adjacent/Hypotenuse
Tan (q) = Old/Aunt = Opposite/Adjacent

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