The Unit Circle

Tutoring on The Unit Circle

Learning Objectives:

Understand and Apply Unit Circle.

Math Tutoring on The Unit Circle

In trigonometry, the Unit Circle is a circle of radius one and centered at the origin (0, 0) of a Cartesian Coordinate system.

If (a, b) is a point on the unit circle, then by the Pythagorean Theorem ‘a’ and ‘b’ satisfy the equation      .

If the ray from the origin (0, 0) to the point (a, b) makes an angle α from the positive X-axis, then the trigonometric functions Cosine and Sine of the angle α is defined as Cosα=a and Sinα=b. So tanα=a/b.

Thus we get the relation .

So with the help of Unit Circle in math tutoring, we can determine all the trigonometric functions of any angles of 30° and 45° and in terms of radians.

We can determine the coordinate of a particular point using the concept of Unit Circle.



Learn ‘The Unit Circle’ with AffordEdu.

Interested in free assessment? Build your personalized study plan with AffordEdu through knowledge map and go for free assessment and free tuition session with math expert. *



Hook Questions:

1.    Give the definition of the Unit Circle?

2.    How can we determine the trigonometric functions value using Unit Circle?

3.    How can we determine the coordinate of a point by the help of Unit Circle?


Learn ‘The Unit Circle’ with AffordEdu Online One on One Math Tutoring.


Struggling with Unit Circle? Need math help for homework? You are not the only one. Fortunately, our expert tutors in math tutoring are online now and are ready to help.