Question

(क) सिद्ध कीजिए :
cos A-sin A +1/
cos A + sin A - 1 = cosec A + cot A​

Answer 1

Step-by-step explanation:

cosA-sinA+1/cosA+sinA-1

devide by sinA in each term

cotA+cosecA-1/cotA-cosecA+1

=(cotA+cosecA)-(cosec²A-cot²A)/(cotA-cosecA+1)

=(cosecA+cotA)(1-cosecA+cotA)/(cotA-cosecA+1)

=cosecA+cotA

Answer 2

Step-by-step explanation:

firstly we have to convert cosA, sinA into cosecA and cotA. by dividing sinA .

use third identity .

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see photo carefully..

I hope you got your answer..

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