Question

Formula for this pls?

Answer 1

@nuts do you know what formula I need to use so I can solve this?

Answer 2

@563blackghost

Answer 3

You follow by Inscribed Angle Thereom: Which is when an inscribed angle is on the circle containing a minor arc.



This means that the addition of 99 and `a` divided by 2 would equal to the angle 100. So you would multiply 100 by 2 and then subtract 99 to find `a`.

\(\large\bf{100 \times 2= 200 \rightarrow 200 - 99 = 101 = a^{o}}\)

@Shadow can you double check this?

Answer 4

Oh

This should beh helpful in the future: https://mathbitsnotebook.com/Geometry/Circles/CRAngles.html

It contains all possible formulas for when angles are contained within a circle.

Answer 5

Okie thank you :)