Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If
x
>
y
>
0
x > y > 0
x
>
y
>
0
, then
tan
−
1
x
y
+
tan
−
1
[
x
+
y
x
−
y
]
\tan^{-1} \frac{x}{y} + \tan^{-1} \left[ \frac{x+y}{x-y} \right]
tan
−
1
y
x
+
tan
−
1
[
x
−
y
x
+
y
]
is equal to (a)
−
π
4
-\frac{\pi}{4}
−
4
π
(b)
π
4
\frac{\pi}{4}
4
π
(c)
3
π
4
\frac{3\pi}{4}
4
3
π
(d) none of these
Browse the problem library