Math, asked by purushothamtidc1, 9 months ago

please answer writing exam be geniune

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Answered by khairnarsanskriti

1

tan^2 theta - 1/cos^2 theta = -1

LHS:

=> sin^2 theta/ cos^2 theta - 1/cos^2 theta

=> sin^2 theta - 1/ cos^2 theta

=> -cos^2 theta / cos^2 theta [ sin^2 theta + cos ^2 theta = 1 ]

=> -1

RHS:

=> -1

LHS= RHS

Hence proved

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