Question

What does `tan(12arcsec(1))+9cos(arc cot(4))` equal?

Answer 1

`36/sqrt 17`

Explanation:

`tan (12 arcsec 1)=tan (12(0)=0`

`9 cos(arc cot 4)=9 cos arc cos.(4/sqrt 17)=9(4/sqrt 17)=36/sqrt 17`.

So, the sum is `36/sqrt 17`.