Equation of the Tangent to a Circle

Curriculum support15 minsFREE

Key takeaways
Recap how to find the equation of a line in the form of y = mx + c
Understand that a tangent meets a radius at 90 degrees.
Find the equation of a tangent to a circle.   
Shahriyar HajghassemHost: Shahriyar is a Maths Teacher at a School in Northwest London, teaching years 7 to 11. He graduated from the University of Warwick in 2013 and set off to China for two years teaching IGCSE and A-Level Economics.

A tangent to a circle at point P with coordinates (x, y) is a straight line that touches the circle at one point.

In this class, students will consider the equation of a tangent - in the form of y = mx + c as a tangent to a circle is a straight line. And since a tangent meets a radius at 90 degrees, students will also review how to find the gradient of perpendicular lines and in turn find the equation of a tangent. 

This is a great class for students who find this area of Maths tricky: to cement existing knowledge and understand the topics explained in a different way. 

Safeguarding reminder:The safety of your child is of the utmost importance. All of our classes are pre-recorded to remove any concerns around live participation. For reruns of our past live classes, students' webcams and microphones were disabled and only the chat history, if participation was requested, is visible.

Suitable for:

Students studying Maths GCSE. 

Class requirements:
You will need a laptop or device with internet connection to watch the class, as well as a pen and notepad for taking notes.
What to expect:
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