A-level maths help!

Do you need to know the formula for the area of a segment in Edexcel A -level maths?

Do you need to know the formula for the area of a segment in Edexcel A -level maths?

(Assuming you mean area if a sector of a circle, also assuming you mean in radians)

The formula to it is nothing more than your usual "Area of circle, multiplied by a proportion". It just happens that quite a bit of stuff cancels, which is good.

Do you need to know the formula for the area of a segment in Edexcel A -level maths?

(Assuming you mean area if a sector of a circle, also assuming you mean in radians)

The formula to it is nothing more than your usual "Area of circle, multiplied by a proportion". It just happens that quite a bit of stuff cancels, which is good.

EDIT: Oh, after some googling, segment apparently means something. Learning new stuff every day.
But anyhow, the "formula" is nothing more than "area of sector, pi*r^2 times a proportion, minus area of triangle, r^2sin(theta)/2".
The latter part is a standard result - area of triangle given 2 sides and the angle between them is 1/2 a b sin(C).

Can someone explain the second page to me, please, please… Pure Math 1

Can someone explain the second page to me, please, please… Pure Math 1

Try to think of what that graph of 1/x would look like.

Then think about how it has been transformed.