Math, asked by supergamer1001000, 1 year ago

Cosec2A+cosec4A=cotA-cot4A prove it

Answers

Answered by Ruchika08
29
Hey,

Cosec 2 A + Cot 4 A = Cosec 4 A - Cot 2 A

Taking LHS  :

⇒Cosec 2 A + Cot 4 A

⇒Cosec 2 A + ( Cot 2 A )2 

⇒Cosec 2 A + ( Cosec 2 A - 1 )2                                         (  we know : 1 + Cot 2 θ =  Cosec 2 θ )

⇒Cosec 2 A +  Cosec 4 A  + 1  - 2 Cosec 2 A

⇒ Cosec 4 A  + 1  - Cosec 2 A

⇒ Cosec 4 A  + 1  - ( 1 + Cot 2 A)

⇒ Cosec 4 A  + 1  -  1 - Cot 2 A

⇒ Cosec 4 A  - Cot 2 A

or cosec2A+cosec4A=cotA-cot4A

Hence Proved.

HOPE IT HELPS YOU:-))

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Answered by bijeshmansth
60

Answer:for nepaese audience

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