The Student Room Group
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>

Alevel MATHS HW HELP ASAP

hello, can anyone help me with Q6a and Q7b as I am really stuck thank you 2CB6EE40-BE11-4EDF-8042-D835B2C123D0.jpg.jpeg8F30FE4E-C680-468E-AE64-CE02D1FE0B92.jpg.jpeg
Reply 1
Avatar for mqb2766
mqb2766
21
Original post by please.help.me
hello, can anyone help me with Q6a and Q7b as I am really stuck thank you 2CB6EE40-BE11-4EDF-8042-D835B2C123D0.jpg.jpeg8F30FE4E-C680-468E-AE64-CE02D1FE0B92.jpg.jpeg

6a) The line joining the circle center to the chord chord will make a right angle with AB. That gives the gradient and it passes through (6,7), so you could treat it as an intersection of two lines.
7b) is similar. If the tangent is parallel to the given line, you know the gradient of the line joining the center to the tangent point. You know its center, so you can work out the point(s) where the meet.

There would be other equivalent ways of solving the problems.
(edited 4 years ago)
Hello, what would the other coordinate be in order to find the gradient for 6a
Reply 3
Avatar for mqb2766
mqb2766
21
Original post by please.help.me
Hello, what would the other coordinate be in order to find the gradient for 6a

Use the fact that the two lines are perpendicular so the product of the gradients is -1

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you