Trigonometry Key Formulas.
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Quadrant problems
*Remember the mnemonic Add Sugar To Coffee. *Make sine as your reference
Area of Triangle with Three sides given.
ALSO CALLED HERONS FORMULA
Relation between 2 sides of triangle altitude on the 3rd side and radius of circumscribing circle
Altitude *Line na mula sa vertex na dapat ay perpendicular sa opposite side.
Length of an Bisector Angle
Angle Bisector *Splits the angle into two congruent angles. *Incenter ang intersection. *Figure is circle inscribed in triangle.
Length of Median
Median: *Line na mula sa vertex hanggang midpoint ng opposite side. *Centroid ang intersection
Perpendicular bisector of the sides of a triangle
Perpendicular bisector *Create a right angle at the midpoint of each segment. *Circumcenter ang midpoint.
