Question

solve tan^2 x -8 tan x + 13

Answer 1

tan(x) = (8 +/- SQRT(12))/2

Answer 2

agree with GT; just take inverse tan of the above to isolate x

Answer 3

solve tan^2 x -8 tan x + 13=0 i mean

Answer 4

it's the same answer as above

Answer 5

this equation is a quadratic in tanx, rather than the usual x by itself. It has two roots, given above.

Answer 6

@Busterkitten there was an error in the last problem you posted.
it had no solution

Answer 7

http://openstudy.com/study#/updates/4f60dfb6e4b038e07180d236

Answer 8

It gives ridiculous values for sin(x) as -5 and 4.

Answer 9

They are not valid. That is why I think it is a bogus problem.

Answer 10

I do to, though it's in my math book