Question

prove that
(1+cosA)(1-cosA)(1+cos²)=1​

Answer 1

Answer:

hey mate here is your answer

LHS = RHS = 1.

Step-by-step explanation:

( 1 - CosA ) ( 1 + Cos A ) ( 1 + CotA × CotA ) = 1

LHS = ( 1 - Cos A ) ( 1 + Cos A ) ( 1 + CotA × Cot )

=> ( 1 - Cos²A ) ( 1 + Cot²A )

=> Sin²A × Cosec²A

=> Sin²A × 1/ Sin²A

=> 1

Hence,

LHS = RHS = 1.

regards brain ly challenger

thank you