1.

If tantheta+3cottheta=5sectheta then theta=(ninz)

Answer»

`NPI+(-1)^(n)(pi)/(4)`
`npi+(-1)^(n)(pi)/(6)`
`npi+(-1)^(n)(pi)/(6)ornpi+(-1)^(n)(pi)/(3)`
`npi+(-1)^(n)(pi)/(2)ornpi+(-1)^(n)(pi)/(6)`

Answer :B


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