Common Core F.TF.A.2: Math Lessons and Worksheets (Printable PDF)

Lessons for F.TF.A.2

Sine, cosine and tangent as functions of a real numberOnce angles are in radians, the input to a trig function can be read as a distance along the circle.Lesson

Trig functions on the unit circleOn the unit circle the x coordinate of the terminal point is the cosine and the y coordinate is the sine.Lesson

Signs of the trig functions by quadrantPinning down where an angle ends when told, for instance, that sine is negative and tangent is positive.Lesson

Reference anglesBringing an angle inside one turn first, then taking its acute angle to the x axis.Lesson