Pythagorean Identites
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SPECIFICATON POINTS
Pythagorean Identities
Understand and use $\sec^2\theta =1+\tan^2\theta$ and $\mathrm{cosec}^2\theta=1+\cot^2\theta$
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Edexcel A level 2020 Paper 1 Q12
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AQA A level 2019 Paper 1 Q12
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OCR A level 2019 Paper 3 Q5