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Find the area of a sector with a radius of 5cm and an angle of 120 degrees?

pi r r pi 5x5 25pi = 360 degrees 120/360 x 25pi = 25/3 pi Teaching Points: Area of a circle + other formalue for circumfrence Degrees of a circle Fractions Dealing with Pi Terminology of sector + cord + tang...
AP
Answered by Anish P. • Maths tutor
5575 Views

How do you measure the gradient of a straight line joining two points?

There is a simple method for working out the gradient of a straight line joining any two points, for which the X and Y coordinates are known. For instance, if our first point is: A(X 1 ,Y 1 ), and our second...
AT
Answered by Alex T. • Maths tutor
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Why maths is so hard sometimes?

I have been struggling with maths when my teacher failed to teach me how to understand maths and only made me do the homework and tests. Maths is all about understanding the logic behind the calculations, th...
AN
Answered by Anna N. • Maths tutor
4148 Views

How do you find the turning points of a curve described by the equation y(x)?

A turning point on a curve will be a point where the curve is flat/horizontal i.e. where it has a gradient of zero. We know that to find the equation for the gradient of a curve we have to differentiate it w...
GF
Answered by George F. • Maths tutor
8513 Views

Particles P and Q of masses 0.4kg and m kg are joined by a light inextensible string over a smooth pulley. When released Q accelerates downward at 2.45ms^-2. Find m.

This is an example of a common Mechanics 1 question. I teach a systematic approach to such questions. Diagram - dram diagram of the pulley set up Label forces on diagram - Tension from string acting vertical...
CN
Answered by Connor N. • Maths tutor
8225 Views