Tangent (tan)= leg opposite the angle/ leg adjacent The angle tan=opp./adj.
Use tan to find a leg and tan-1 to find the angle
Section 11-2
Sine and Cosine Ratios
Sine (sin)= Opposite leg/ hypotenuse sin=opp./hyp.
Sosine (cos)= Adjacent leg/ hypotenuse cos= adj./hyp.
Use sin and cos to find the sides and sin-1 and cos-1 to find the angles
Section 11-3
Angles of Elevation and Depression
Angle of Elevation- horizontal sight line
Angle of Depression- horizontal sightline looking down
Section 11-4
Vectors and Trig
Vector Notation vector- any quantity that has a mag. ( velocity, size) and direction
Section 11-5
Adding Vectors
Parallelogram Method
Resultant- Vector we want to find
Diagonal- That falls between the two given vectors
Section 11-6
Area of Polygons
Regular Polygon= Equilangular, equilateral
Area of regular polygon is half the product of the apothem and the perimeter
A=1/2ap
