(ix)
Let ……….(i)
=
……….(ii)
Now, from eq. (i), = = ……….(iii)
Here and
Then
=
=
Since, and is approximately equal to and respectively.
From eq. (ii),
Therefore, approximate value of is = 3.0092.
(x)
Let ……….(i)
=
……….(ii)
Now, from eq. (i),
=
Here, and , then
=
Since, and is approximately equal to and respectively.
From eq. (ii), =
Therefore, approximately value of is = 20.025.