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For the principal values, evaluate each of the following: `tan^(-1)sqrt(3)-sec^(-1)(-2)+cos e c^(-1)2/(sqrt(3))`

`2sec^(-1)(2)-2cos e c^(-1)(-2)`

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(i)`tan^(-1)sqrt(3)-sec^(-1)(-2)+cos e c^(-1)2/(sqrt(3))`
`=>π/3​−(2π)/3​+π/3`​
`⟹0`
(ii) `2sec^(-1)(2)-2cos e c^(-1)(-2)`
`=>(2(pi))/3+(2(pi))/6`
`=>(5(pi))/5=1`
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