maths ext. hlp plz (1 Viewer)

[super.muppy]

p,a,b and c are four points in a plane such that BPA and CPA are obtuse and on the opposite sides of PA. PA = 8 cm, BP = 10 cm, PC= 12cm, AB =14 cm and AC = 18 cm. CAlculate the length of BC

please and thanx really

 

[super.muppy]

p,a,b and c are four points in a plane such that BPA and CPA are obtuse and on the opposite sides of PA. PA = 8 cm, BP = 10 cm, PC= 12cm, AB =14 cm and AC = 18 cm. CAlculate the length of BC

please and thanx really

plzz

 

[Aquawhite]

Move this to the maths thread... and drawing a diagram will help you.

 

[adomad]

angle BPA and CPA are the same thing... common middle letter....

what topic is this in? geometry?

 

[khorne]

The diagram is easy...it's a triangle inside a triangle, common side BC and PA is the line joining their tips. I think it's a trig question.

 

[Aquawhite]

Out of interest, what textbook is this from?