If tanx=-1.5, what is the value of tan-x?
Find the value of given trigonometric expression
Given that tanx=-1.5
We know that
tan-x=-tanx
Therefore
tan-x=-tanx⇒tan-x=--1.5∵tanx=-1.5⇒tan-x=1.5
Hence, the value of tan-x is 1.5.