- #1
ai93
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The length of the minor arc of a circle is 10cm, while the area of the sector AOB is 150cm2.
a) Form two equations involving r and θ, where θ is measured in radians.
b) Solve these equations simultaneously to find r and θ.
Help to solve? Cant understand the question very well.
I think the arc length formula was
length=\(\displaystyle \frac{n}{360}\cdot2\pi(r)\)
\(\displaystyle \therefore10=\frac{n}{360}\cdot2\pi(r)\)
The question states, Form two equations involving r and θ, where θ is measured in radians.
So would we have to arrange the formula to find the r and \(\displaystyle \theta\)
a) Form two equations involving r and θ, where θ is measured in radians.
b) Solve these equations simultaneously to find r and θ.
Help to solve? Cant understand the question very well.
I think the arc length formula was
length=\(\displaystyle \frac{n}{360}\cdot2\pi(r)\)
\(\displaystyle \therefore10=\frac{n}{360}\cdot2\pi(r)\)
The question states, Form two equations involving r and θ, where θ is measured in radians.
So would we have to arrange the formula to find the r and \(\displaystyle \theta\)