What does tan(90degrees-x) equal to

Question

I do not understand what tan(90degrees-x) is equal too. I understand how cos(90degrees-x is equal too sin x but I do know know what tan(90degrees-x) is equal to

Answer 1

In addition to cos(90° - x) = sin(x), use sin(90° - x) = cos(x)

 

tan(90° - x) = sin(90° - x) / cos(90° - x) = cos(x) / sin (x) = 1/tan(x) = cot(x)

Answer 2

cotangent of x