Finding the Angles Practice:

Find the angle for each function. Round off to the nearest 1/2° .

    Question          Answer

 (1) sin  = 0.3745        22° 
 (2) tan  = 1             45° 
 (3) cos  = 0.8632        30.5° 
 (4) sin  = 1             90° 
 (5) tan  = 0.5785        30° 
 (6) sin  = 0.7756        51°  
 (7) cos  = 0.9397        20° 
 (8) tan  = 1.5030        56.5° 

Finding the Angles When Two Sides Are Known: Practice

Find the measurement for both angles of each right triangle. Round off each answer to the nearest 1/2° .

    Question                      Answer

(1) Opp = 22"       Hyp = 34"          40.5° /49.5° 

(2) Adj = 19.375"   Opp = 27.5"        55° /35° 

(3) Adj - 64.9375"  Hyp = 78.4375"     34° /56° 

(4) Opp = 14.5"     Adj = 29.685"      26° /64° 

(5) Hyp = 3'        Opp = 2.5'         56.5° /33.5° 

Finding the Angle Using the Functions Table: Practice

Find the unknown angles for each right triangle below. Use the functions table.

   (1) 28° / 62°      (2) 53° /37°      (3) 28° /62°      (4) 56.5° /33.5°

---