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

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

A

x may be a multiple of `pi`

B

x cannot be an even multiple of `pi`

C

z can be a multiple of `pi`

D

y can be a multiple of `pi/2`

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The correct Answer is:
A, D
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PATHFINDER-TRIGONOMETRIC EQUATION AND INVERSE-QUESTION BANK
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