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Given sin=-4/5 and x is in quadrant 3, what is the value of tan x/2

I’m giving out free points and brainliest to whoever answers this fast and correct : ) if you want to obtain a class e license before you turn 18, you a. be in compliance with school attendance requirements b. have proof of employment c. be a u.s. citizen d. own a motor vehicle

Identify one similarity between china and europe that explains their decisions on wether to explore or conquer lands around the indian ocean