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°

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter5: Trigonometric Functions: Right Triangle Approach
Section5.CR: Chapter Review
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2. Given an isosceles right triangle ABC with angle A = 45°. What is the length of AB if cos
45° = AC /AB?
B
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?
x ft
25 f
38
40 ft
5. Given are the three sides of a right triangle with acute angle a. Which trigonometric ratio
is correct?
17
8
15
a
C
45°
Transcribed Image Text:2. Given an isosceles right triangle ABC with angle A = 45°. What is the length of AB if cos 45° = AC /AB? B 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? x ft 25 f 38 40 ft 5. Given are the three sides of a right triangle with acute angle a. Which trigonometric ratio is correct? 17 8 15 a C 45°
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