Question

सिद्ध कीजिए कि (cotA + cosecA – 1)/(cotA – cosecA + 1) = (1 + cosA)/sinA = sinA/(1 – cosA)

Answer 1

Question :--- we have to prove (cotA + cosecA – 1)/(cotA – cosecA + 1) = (1 + cosA)/sinA

Formula to be used :----

• 1 = cosec²a - cot²a
• (a²-b²) = (a+b)(a-b)

solution :--------

Putting value of 1 from above formula in numerator and solving furture , we proved this ...

See solution in image ....

Remember this also for future :-----

$\boxed{\begin{minipage}{7 cm}Fundamental Trignometric Identities\\ \\ \sin^2\theta+\cos^2\theta=1\\ \\ 1+\tan^2\theta=\sec^2\theta \\ \\ 1+\cot^2\theta=\text{cosec}^2 \, \theta \end{minipage}}$

Answer 2

Step-by-step explanation:

your answer attached in the photo