Question

Evaluate tan^-1(1)

Answer 1

What angle is sin(x) and cos(x) the same in the first quadrant?

Answer 2

yes

Answer 3

\[\tan^{-1}(1)=x\implies1=\tan x=\frac{\sin x}{\cos x}\]which must mean sinx=cosx
when does that happen?

Answer 4

can anyone of you help me

Answer 5

Tangent of what angle gives you 1?

Answer 6

yes

Answer 7

@yolanda1 I really don't see the point of coming on open study for help if you're not going to work with those who try to teach you

Answer 8

tahts what i though but i wasent really sure

Answer 9

No one answered the question-_-

Answer 10

@yolanda1 It's 45.