Question

Simplify the expression tan(arccosx)

Answer 1

@ivescal
in this ques we will try to convert arccosx into arctan
so first step would be
assume arccosx = t
x = cost
do u know what is cosine of angle in right angled triangle????????????

Answer 2

No i'm not sure what it is

Answer 3

here P , H , B denotes perpendicular , hypotenuse , base respectively of a right angled triangle
so the cosine of angle t OR cos(t) = B/ H -----(1)
from above x = cost ------(2)
on comparing (1) and (2), tell me what are the values B and H will get??????