(vii)
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 = 2.9629.
(viii)
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 = 3.9961.