gaiveighbetoretherootdependson the quadrant inwhich θ liesWorked Out ExamplesTYPE I. Problems based on proving identities.ORKING RULE : Use the formulac given in the above box whichever are required.XAMPLE 1. Prove the following identities1+sin θsec θ+ tan θ(ii) (1 + tan"6) (1-sin θ) (1 + sin θ)11-sin θ _) cot4 θ + cot-6-cosec4 θ-cosec, θ) (1 + cot θ-cosec θ) (1 + tan θ + sec θ)-2iiiv

gaiveighbetoretherootdependson the quadrant inwhich θ liesWorked Out

1.	gaiveighbetoretherootdependson the quadrant inwhich θ liesWorked Out ExamplesTYPE I. Problems based on proving identities.ORKING RULE : Use the formulac given in the above box whichever are required.XAMPLE 1. Prove the following identities1+sin θsec θ+ tan θ(ii) (1 + tan"6) (1-sin θ) (1 + sin θ)11-sin θ _) cot4 θ + cot-6-cosec4 θ-cosec, θ) (1 + cot θ-cosec θ) (1 + tan θ + sec θ)-2iiiv
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