Question

prove the following identity​

Answer 1

Answer:

Proved

• Step-by-step explanation:
• cot A-1 / 2-sec2A
• = cot A-1 / 2-(1+tan2A)
• = cot A-1 / 1-tan2A
• = (1/tanA ) -1 / 1-tan2A [cotA =1/tanA]
• =(1-tanA) /tanA / 1-tan2A [Taking LCM]
• = (1-tanA) /tanA / (1+tanA)(1-tanA) [a2-b2 = (a+b)(a-b)]
• =(1/tanA) / 1+tanA
• = cotA / 1+tanA [1/tanA= cotA]
• Proved
• Hope this will help you!!!!!!!!!!