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If (cos^(2)x+(1)/(cos^(2)x))(1+ tan^(2) ...

If `(cos^(2)x+(1)/(cos^(2)x))(1+ tan^(2) 2 y)(3+ sin 3 z)=4` , then

A

x may be a multiple of pi

B

x cannot be an even number of `pi`

C

z can be a multiple of `pi`

D

y can be a multiple of `(pi)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
A, D
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