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Problems
Problem
Problem
The value of
lim
x
→
a
cos
x
−
cos
a
cot
x
−
cot
a
\lim_{x \to a} \frac{\cos x - \cos a}{\cot x - \cot a}
lim
x
→
a
c
o
t
x
−
c
o
t
a
c
o
s
x
−
c
o
s
a
is a.
−
sin
3
a
-\sin^3 a
−
sin
3
a
b.
cos
3
a
\cos^3 a
cos
3
a
c.
sin
3
a
\sin^3 a
sin
3
a
d.
cot
a
\cot a
cot
a
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