Question

pls tell ans... pls fast​

Answer 1

$\frac{1 - cot \alpha }{1 - tan \alpha } = \frac{1 - \frac{cos \alpha }{sin \alpha } }{1 - \frac{sin \alpha }{cos \alpha } } \\ \\ = \frac{ \frac{sin \alpha - cos \alpha }{sin \alpha } }{ \frac{cos \alpha - sin \alpha }{cos \alpha } } \\ \\ = \frac{cos \alpha (sin \alpha - cos \alpha )}{sin \alpha (cos \alpha - sin \alpha )} \\ \\ = \frac{cos \alpha (sin \alpha - cos \alpha )}{ - sin \alpha (sin \alpha - cos \alpha )} \\ \\ = - cot \alpha$

ᴏᴘᴛɪᴏɴ (1).. is correct..

Answer 2

Answer:

- COT A

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