Question

prove that cos square theta(1+tan square theta)=1​

Answer 1

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Solution:

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To prove:

1 + tan²θ x cos²θ = 1

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Proof :

LHS = 1 +tan²θ x cos²θ

         = (sec²θ) x cos²θ

         =(1/cos²θ) x cos²θ

         = 1 = RHS

             ∴ Hence proved,

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Answer 2

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