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If tan(alpha-beta)=1, sec(alpha+beta)=2/...

If `tan(alpha-beta)=1, sec(alpha+beta)=2/(sqrt(3)` and `alpha, beta` are positive then the smallest value of `alpha` is

A

`142(1^(@))/(2)`

B

`187(1^(@))/(2)`

C

`7(1^(@))/(2)`

D

`37(1^(@))/(2)`

Text Solution

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The correct Answer is:
D
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