4, for the similar triangles find the distances x and y and the angles a and b. 55â° 4.8in b 3in 12in 35â° 90â° y 15in 5. a streetlight 30 feet tall casts a shadow of a horse. if the shadow is 3 feet long and the horse is 12 feet from the base of the streetlight find the height of the horse in feet. assume they are on level ground. 6. a) find the missing length b in the triangle: round answer to 2 decimal places.] h 30â° 12 b) find the angle x in degrees for the triangle: [round answer to 2 decimal places.] 5