Maths question help plss

can anyone explain q19 p134 of the as maths textbook thank you :smile:

can anyone explain q19 p134 of the as maths textbook thank you :smile:

Just post the question, not everyone is gonna have that textbook, let alone know which one you're referring to.

here

bump

bump

For part (a), you know that

\ell_1

and

\ell_2

are tangent to the circle. You also know that they go through

R(0,6)

Let's say that

\ell_1: y-6=kx

for some

k \in \mathbb{R}

Now the question turns into "For what values of

k

is the line

\ell_1

tangent to the circle

C

?"

Can you finish it off?

For part 1 you could also differentiate implicitly and go from there

How to revise for A-level Maths exams: AQA explains what to do

Best places online for maths revision

How to prepare for a university interview

What are The Student Room badges?