What is (tan x + tan y)(1 – cot x cot y) + (cot x + cot y)(1 – tan – McqOptions

MCQOPTIONS

1.	What is (tan x + tan y)(1 – cot x cot y) + (cot x + cot y)(1 – tan x tan y) equal to?
A.	0
B.	1
C.	2
D.	4
Answer» B. 1

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