Using the diagram, determine the measure of ?1.
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Fill in the blank(s) with the appropriate word(s).
90°55'
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Technician A states mufflers are no longer required on vehicles manufactured after 2010 and can be replaced with a straight exhaust pipes. Technician B states it is illegal to tamper with or modify emission control devices. Which technician is correct?
A. Technician A only. B. Technician B only. C. Both A and B. D. Neither A nor B.