Trigonometric identity — task. Maths CBSE Live product, Class 10 Foundation.

1. \(\sin^2 α\) \(=\)

\(1 + \cos α\)
\(1 - \cos^2 α\)
\(1 - \cos α\)
\(1 + \cos^2 α\)

2. \(\cot α\) \(=\)

\(\sqrt{\text{cosec}^2\: α - 1}\)
\(\sqrt {\tan^2 α + 1}\)
\(\sqrt{\text{cosec}\: α - 1}\)
\(\sqrt {\tan^2 α - 1}\)

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