To find: The value of .
The value of .
The circular arc of length is s and the chord of length is d.
Circular arc length: s = , where r is the radius of the circle.
The value of limit .
The given picture is shown in the below Figure 1.
From Figure 1, .
Calculate the value of d.
From the triangle PQR as shown in Figure 1,
Therefore, the value is .
Let then x will approach to as approaches to .
Use Result stated above and obtain the value of the limit.
Therefore, the value of .
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