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A value of for which (2+3isintheta)/(1-...

A value of for which `(2+3isintheta)/(1-2isintheta)` purely imaginary, is : (1) `pi/3` (2) `pi/6` (3) `sin^(-1)((sqrt(3))/4)` (4) `sin^(-1)(1/(sqrt(3)))`

A

`(pi)/(3)`

B

`(pi)/(6)`

C

`sin^(-1) ((sqrt(3))/(4))`

D

`sin^(-1) ((1)/(sqrt(3)))`

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The correct Answer is:
D
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