Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Given that 0 < x < 
, 
< y < 
and 
tan 2k x = p, 
cot 2k y = q, then 
x cot 2k y is -
A
B
C
p + q – pq
D
p + q + pq
Text Solution
Verified by ExpertsThe correct answer is:
B
p = 1 – tan 2 x + tan 4 x –…… ∞ = 
= cos 2 x
q = 1 – cot 2 y + cot 4 y – …… ∞ = 
= sin 2 y
Now 
= 1 + tan 2 x cot 2 y + tan 4 x cot 4 y + …… ∞
= 
= 
= 
= 
= 
= 
.
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