What is tan134 I need to know how to compute this so that th

What is tan^-1(-3/4)

I need to know how to compute this so that the pi is in the final answer, but I am at a loss. If someone could help me through this I\'d greatly appreciate it.

Solution

tan^-1(-x)=-tan^-1(x)

tan^-1(-3/4)

=-tan^-1(3/4)

=-0.6435

least positive coterminal angle will be 2-0.6435

tan^-1(-3/4)=2 -0.6435