The value of (1 + sec 20 + cot 70 ) (1 cosec 20 + tan 70 ) is equa – McqOptions

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1.	The value of (1 + sec 20 + cot 70 ) (1 cosec 20 + tan 70 ) is equal to
A.	0
B.	1
C.	2
D.	- 1
Answer» D. - 1

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