O is the centre of a circle. P is a point on its circumference. the gradiant of OP is 2. what is the gradient of tangent P.

can i also please have an explanation

Printable View

- October 22nd 2008, 08:58 AMsallyishypertangents.urgent!!!!!!!!
O is the centre of a circle. P is a point on its circumference. the gradiant of OP is 2. what is the gradient of tangent P.

can i also please have an explanation - October 22nd 2008, 09:45 AMSoroban
Hello, sallyishyper!

Quote:

is the centre of a circle. is a point on its circumference.

The gradient of is 2.

What is the gradient of the tangent at

We are expected to know this theorem:

*The tangent to a circle is*__perpendicular__to the radius to the point of tangency.

If the gradient of the radius is 2, then the gradient of the tangent is __ ?

- October 22nd 2008, 09:49 AMmasters