Solving a problem where we know how much sine is for an unknown
angle means that we are to find the angle. In order to solve these
equations we use inverse the trigonometric functions called inverse
sine or arcsine.
Example
Find the angle where
We solve this by taking the inverse sine on both sides, this is
notated either by sin-1 or Arcsin:
The same technique is used on both cosine and tangent and is
notated with cosin-1 or Arccos and tan-1 or
Arctan.
Videolesson:solve the following equation tan
Ѳ=0.5