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Answer» ong>Answer: 1.Step-by-step EXPLANATION: a cotx = 1 , B cosx = 1 a = 1/cotx, b = 1/cosx b² - a² = (1/cosx)² - (1/cotx)² {1/cosx = secx, 1/cotx = tanx.} => (sec x)² - (tan x)² => sec²x - tan²x => 1. (According to the FORMULA).
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