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Given:
The equation of line is .
A line is parallel to given equation and passes through the point (-4,-8).
To find:
The equation of parallel line.
Solution:
The equation of a line is
On comparing this equation with , we get
So, slope of given line is -3.
We know that, slopes of parallel lines are equal. It means, the slope of the parallel line is also -3.
The parallel line passes through (-4,-8) and having slope -3. So, the equation of line is
Therefore, the equation of parallel line is .
The radius of the given circle with a central angle of 7π/10 and arc length of 33cm is 15cm.
It is given that
The central angle of the given circle = 7π/10 radians
Length of arc = 33cm
<h3>What is the formula for arc length?</h3>Arc length = central angle* radius
From the above formula
Radius = Arc length/Central Angle
Radius =
Radius = 15cm
Therefore, radius of the given circle is 15cm.
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