cosA*rootunder 1+cot2A
trigonometry question
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Answer: TanA
Step-by-step explanation:
CosA * root (1 + cot^2 A)
= CosA * root ( cosec^2A - cot^2A + cot^2A) { cosec^2 theata - cot^2 theata = 1}
= CosA * root ( cosec^2A)
= CosA * CosecA
= CosA * 1/sinA
= CosA/SinA
= TanA
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