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Mathematics
Mathematics
Problem
Evaluate
lim
h
→
0
cos
(
x
+
h
)
−
cos
x
h
\displaystyle \lim_{h \to 0}\dfrac{\cos(x+h)-\cos x}{h}
h
→
0
lim
h
cos
(
x
+
h
)
−
cos
x
. a)
sin
x
\sin x
sin
x
b)
−
sin
x
-\sin x
−
sin
x
c)
cos
x
\cos x
cos
x
d)
0
0
0
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