<span>The value of r represents the reference angle when plotting a point in polar coordinates.
False
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1. <span><span>7 2/9</span>−<span>4 <span>2/3</span></span></span><span>=<span>2 <span>5/9</span></span></span><span>(Decimal: 2.555556)</span>
No circumference of a circle is very easy to me