O _ A (4/5) (4/5) 38.7° (angles are typically rounded to the tenth) 38.7° tanθ = O A tanC = 20 _ 16 C = tan-1(5/4) C ≈ 51.3°

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Presentation transcript:

Solving a right triangle means to find all of its missing sides and angles.

O ___ A 16 20 4 5 __ (4/5) (4/5) 38.7° (angles are typically rounded to the tenth) 38.7° tanθ = O __ A tanC = 20 ___ 16 C = tan-1(5/4) C ≈ 51.3°

sin-1(0.76) cos-1(0.17) 49.5° 80.2°

180° 67° sine sin23° 40 × sin23° 40 skip this step 15.629ft cosine cos23° 40 × cos23° 40 skip this step 36.820ft 23° 67° 90° 40 15.6 36.8

O ___ A tanθ = tanx° = 4 96 x = tan-1(4/96) x ≈ 2.4° 2.4° is less than