Math, asked by fish43, 6 months ago

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Answered by SJKSS

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Answered by srishanth2020

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x=1/ cosA

y=tanA

x²-y²= (1/ cos²A) -(sin²A/cos²A)

this gives =(1- sin²A) / cos²A

it becomes= cos²A/ cos²A=1

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