Maths GCSE level 9 question
Circle 1 has radius 5cm.
Circle 2 has radius 4cm.
C is the centre of the Circle 2.
The line AB lies on a diameter of Circle 1 .
The line AB is perpendicular to a line passing through the centre of both circles.
AC and BC are tangents to Circle 1 and pass throughC . Find the area of triangle ABC . Give your answer to 3 significant figures.
Circle 2 has radius 4cm.
C is the centre of the Circle 2.
The line AB lies on a diameter of Circle 1 .
The line AB is perpendicular to a line passing through the centre of both circles.
AC and BC are tangents to Circle 1 and pass throughC . Find the area of triangle ABC . Give your answer to 3 significant figures.
Original post by Reyaansh
Circle 1 has radius 5cm.
Circle 2 has radius 4cm.
C is the centre of the Circle 2.
The line AB lies on a diameter of Circle 1 .
The line AB is perpendicular to a line passing through the centre of both circles.
AC and BC are tangents to Circle 1 and pass throughC . Find the area of triangle ABC . Give your answer to 3 significant figures.
Circle 2 has radius 4cm.
C is the centre of the Circle 2.
The line AB lies on a diameter of Circle 1 .
The line AB is perpendicular to a line passing through the centre of both circles.
AC and BC are tangents to Circle 1 and pass throughC . Find the area of triangle ABC . Give your answer to 3 significant figures.
Its q16 in
https://m4ths.com/uploads/3/5/2/1/35219558/new_9_to_1_grade_9_paper_2_calc.pdf
and youve missed out the fact theyre touching.
As per your other posts, what have you tried/what are you stuck with.
Original post by Reyaansh
yes. so far I've basically got to the fact that the area would be (9 * AB)/2.
agreed, so how do you get AB? Its AB in the formula, not (5+n)?
Note when the question says a tangent touches a circle, you almost always draw on the corresponding radius (radii) as they generate right triangle(s).
(edited 9 months ago)
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