(If A+B+C=180) tan 2A + tan 2B + tan 2C = tan 2A tan 2B tan 2C
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Answer:
see below
Step-by-step explanation:
Eric will drive between 70 -4 = 66 mph and 70+4 = 74 mph. He will <em>not</em> drive less than 66 or more than 74 mph.
