Question

how it is explain process​

Answer 1

option (d) is correct

$\tan(15) + \tan(75)$

$\tan(45 - 30) + \tan(45 + 30)$

by the formula

$\frac{ \tan(45) - \tan(30) }{1 + \tan(45) \tan(30) } + \frac{ \tan(45) + \tan(30) }{ 1 - \tan(45) \tan(30) }$

$\frac{ \sqrt{3} - 1 }{ \sqrt{3 + 1} } + \frac{ \sqrt{3 } + 1}{ \sqrt{3 } - 1}$

by solving it

we get

8/4

= 4

so option d is correct