2. Given an isosceles right triangle ABC with angle A = 45°. What is the length of AB if cos 45° = AC /AB? B C a A 3 3. What is the measure of the missing angle? 38 38°+90° + ? = 180° 4. Using angle 38° as an angle, which is trigonometric ratio for x/25 feet? 52 xft 25 f 38 40 ft 45°

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