if 3 tan²A-1=0,find A
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Answer:
A = 30°
Step-by-step explanation:
3 tan² A -1 = 0
=> 3 tan ²A = 1
=> tan²A = 1/3
=> ( tan A )² = 1/3
=> tan A = √(1/3)
=> tan A = 1/√3 = tan 30°
=> A = 30°
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