`tan^(2)x+cot^(2)x` का न्यूनतम मान क्या है ?

Options

A. 3
B. 2
C. 0
D. 1

Answer

b

Explanation

`tan^(2)x+cot^(2)x`
we know that the value of `tan^(2)x` and `cot^(2)x` is minimum at `45^(@)`
`therefore tan^(2)45^(@)+cot^(2)45^(@)=1+1=2`