What does $cos(arctan(1))+3csc(arc csc(2))$ equal?

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Answer 1 · 2016-03-25T04:39:59

$1/sqrt2+6$

As tan $(pi/4)=1$ , arctan (1) = $pi/4$ and csc(arccsc(a)) =a.
So, the expression = cos $pi/4$ + 3X2 = $1/sqrt2$ + 6.

Also, arctan(1) = arc cos $(1/sqrt2)$ .
cos $arc cos (1/sqrt2)=1/sqrt2$ ..

What does cos(arctan(1))+3csc(arc csc(2))cos(arctan(1))+3csc(arc csc(2)) equal?