Sin θ - Ratio of Perpendicular to Hypotenuse Cos θ - Ratio of Base to Hypotenuse Tan θ - Ratio of Perpendicular to Base Tips and Tricks to Learn Trigonometric Formulas, Table and Signs Easily ...

2 cos (x π 6) = 2 cos (x π 6) = 2 2 cos (x π 6) = 1 2 Since cos is positive, we are in the 1st and 4th quadrants.