YouTube on MSNOpinion

Using arc length formula to find the values for a circle

πŸ‘‰ Learn how to solve problems with arc lengths. You will learn how to find the arc length of a sector, the angle of a sector ...
YouTube on MSNOpinion

Find the sector length or angle using arc length formula

πŸ‘‰ Learn how to solve problems with arc lengths. You will learn how to find the arc length of a sector, the angle of a sector ...
BBC

Circle Theorems – Area of circles and sectors

The area of a circle is the amount of two-dimensional space enclosed by its circumference. The area of a circle is calculated using the formula: 𝐴 = πœ‹π‘Ÿ² The area of a sector is the two-dimensional ...
BBC

Higher – Calculations using the alternate segment theorem, tangents and chords

It is important to remember other angles rules, such as angles on a straight line add up to 180°, and to recognise angles in parallel lines. Make sure you are confident in applying Pythagoras’ theorem ...