In Exercises 17 to 22, use either the sine ratio or the cosine ratio to find the lengths of the indicated sides of the triangle correct to the nearest tenth of a unit. 17. 18. 57 100 ft 5 in. 32 a 19. 20. 60 20 ft 5v2cm y 45 21. 22. y 12 in. 17 51°

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