Chapter 13 Right Angle Trigonometry Algebra 2 Chapter 13 Right Angle Trigonometry

TOA SOH CAH Trigonometry A B C A Hypotenuse Leg Opposite A Leg Adjacent To A TOA SOH CAH

Example… Find sin L, cos L, tan L Find sin N, cos N, tan N. 17 8 15 8 N Hypotenuse opposite L adjacent Find sin L, cos L, tan L Find sin N, cos N, tan N.

Using the Calculator…. Example: = 0.9991 tan 27.5° = 0.5206 To find the value of a function…push the appropriate button (sin, cos, tan), then the angle measure, and enter (=). Example: = 0.9991 tan 27.5° = 0.5206

More … Calculator… To find the measure of the angle: 2nd, function (sin, cos, tan), the value, the enter (=). Example: cos R = 0.6401 B = 51.5° R = 50.2°

Back to triangles…. Example Find x. cos 41 = x/32 x = 32cos41 23 11 x cos 41 = x/32   x = 32cos41 x = 64.4° x = 24.1507