sin  = sin  = sin  = cos  = cos  = cos  = tan  = tan  = Geometry/Trig Name __________________________ 8-5 SOHCAHTOA Notes Date ______________ Block ________ What is Trig used for? ____________________________________________________ ____________________________________________________ Greek symbol for an angle 3 Basic Trig Functions ABBREVIATIONS ___________________ __________ To solve for a missing side or angle in a right triangle, use… Example: Express each value as a fraction. sin  = cos  = tan  = Example 2: Express each value as a fraction. Example 3: Express each value as a fraction. sin  = sin  = cos  = cos  = tan  = tan  = sin  = cos  = tan  =

Geometry/Trig 8-5 SOHCAHTOA Notes Directions: Use Trigonometry to solve for the missing side or angle measurement. Example 1: Example 2: Example 3: Example 4: Example 5: Example 6:

Geometry/Trig Name __________________________ 8-5 SOHCAHTOA Notes DAY 2 Date ______________ Block ________ Example 1: Express each value as a fraction. Example 2: Express each value as a fraction. sin β = cos β = tan β = sin θ = cos θ = tan θ = Example 3: Given . Find sin β and Example 4: Given . Find cos θ and tan β. Leave answers as fractions, in tan θ. Leave answers as fractions, in simplest form. simplest form.

Inverse Trig Functions: Geometry/Trig 8-5 SOHCAHTOA Notes DAY 2 Inverse Trig Functions: ___________________________________________________________________ Example 1: Example 2: Example 3: Example 4: Practice: Solve for the missing angle(s) using trig. Round to the nearest hundredth. 1) 2) 12 θ 15 θ β 20 10