Lessons for Topic 3.2
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
Reciprocal and quotient identitiesTangent equals sine over cosine, and cotangent equals cosine over sine.Lesson
Sine, cosine and tangentThe ratio of the side opposite an acute angle to the hypotenuse.Lesson