Find the value of theta in (pi/2,pi) if cos theta = -12/5
justaguide | Certified Educator
You have given that cos theta = -12/5 and we have to determine the values of theta that satisfy the relation.
-12/5 = -2.4
But the cosine of any number lies in the interval [-1, 1]
Therefore there can be no theta such that cos theta = -12/5