Let 
Find the value of k for which 
exist.
Left Hand Limit(L.H.L.):
= 0 + k
= k
Right Hand Limit(R.H.L.):
= cos (0)
= 1
It is given that 
exists. Therefore,
→ k = 1
1
Let
Find the value of k for which exist.
Left Hand Limit(L.H.L.):
= 0 + k
= k
Right Hand Limit(R.H.L.):
= cos (0)
= 1
It is given that exists. Therefore,
→ k = 1