1. INVERSE TANGENT GEO200 tan = opposite adjacent  = tan -1 opposite adjacent INVERSE TANGENT: (tan -1 ) finds the measure of the angle of a right triangle.  opp TANGENT: finds the length of a side of a right triangle. adj

2. INVERSE TANGENT GEO200 Use tan -1 to find  to the nearest degree.  A B C 17 8  A B C 19.3 11.2 Answer on next slide. TRY IT!

3. INVERSE TANGENT GEO200 ANSWER!  = tan -1 17 8 = 65° 11.2 19.3  = tan -1 = 30° Use tan -1 to find  to the nearest degree.  A B C 17 8  A B C 19.3 11.2