Question

which one of the following is in correct (a) sin-1(-x) =-sin-1x (b) cos-1(-x)= pie -cos-1x (c) sec-1(-x)=pie -sec-1 (d)cot-1(-x)= -cot-1 x.

Answer 1

Answer:

b is incorrect

Step-by-step explanation:

cos-1(-x)=-cos-1(x)