1.

If sec 4 theta - sec 2 theta = 2 " then " theta=

Answer»

`(N + (1)/(2) ) pi, n in Z`
`(n*+(1)/(3))pi,n in Z`
`(n + (1)/(4))pi, n in Z`
`(n + (1)/(5))pi, n in Z`

ANSWER :A


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