You are Here: Home >< Maths

# tangent always perpendicular to radius??? watch

1. guys
i wanna know whether
tangent of the circle always perpendicular to radius of the circle??? is true.

i think its true but aint sure
2. yes it is true
3. lol - well - lets put it this way - maths would prolly fall apart if that wern't true

phil
4. (...if the radius touches the tangent)
5. yup
6. (Original post by chubby)
guys
i wanna know whether
tangent of the circle always perpendicular to radius of the circle??? is true.

i think its true but aint sure
It's certainly true. You can think of the radius being a section of the normal to the circle at a point, which is perpendicular to the tangent at the same point.
7. A Tangent to a circle, will be perpendicular to the radius and the diameter of the circle, as it will be 90 degrees from diameter/radius of circle
Two lines subtended from either ends from circle to meet at a point will create a right-angle triangle inside the circle.
The perpendicular bisector of a chord in a circle will pass through the centre of the circle.

These rules are the fundamentals of (co-ordinate) geometry.
8. thanks guys!!! now determining radial and transverse equations during circular motion will be easy.

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: June 17, 2005
The home of Results and Clearing

### 3,248

people online now

### 1,567,000

students helped last year
Today on TSR

### University open days

1. London Metropolitan University
Sat, 18 Aug '18
2. Edge Hill University
Sat, 18 Aug '18
3. Bournemouth University
Sat, 18 Aug '18
Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams