\(\displaystyle\int\left(\dfrac{1}{\sin^2 x} + \dfrac{1}{\cos^2 x}\rig

1.	\(\displaystyle\int\left(\dfrac{1}{\sin^2 x} + \dfrac{1}{\cos^2 x}\right)dx= \ ?\)
A.	tan x + cot x + C
B.	tan x - cot x + C
C.	(tan x + cot x)2 + C
D.	(tan x - cot x)2 + C
Answer» C. (tan x + cot x)2 + C

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\(\displaystyle\int\left(\dfrac{1}{\sin^2 x} + \dfrac{1}{\cos^2 x}\right)dx= \ ?\)

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