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Earn +20 ptsQ: Application of relation between arc of length and central angle?
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What is the relation between the arc length and pi?
arc length/2pi*r=measure of central angle/360
What is Relation between the length of the circular arc and the radian measures of its central angle?
You can think of an arc as a fraction of the circumferance of a circle. Also, a complete circle is 2pi radians, so any central angle is THETA / 2pi of a complete circle. Multiply by the circumferance to get the length of the arc: THETA / 2pi * 2(pi)(r) = THETA * r or the length of the arc is simply the radius times the central angle in radians
What is the relation between focal length and center of curvature?
The focal length of a concave mirror is about equal to half of its radius of curvature.
What is relation between focal length and radius of curvature in lenses?
The Center of curvature is 2 times the focal length. By the way this is a physics question.
What does 75 -300 mm mean in relation to camera lenses?
This is a Zoom lens with a focal length of between 75 and 300 mm.
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