Question

( 1 - cos A ) ( 1 + sec A ) = tan A sin A​

Answer 1

Answer:

1(1+sec A)-cos A(1+sec A)

1+sec A-cos A -1

sec A-cos A

1/cos A-cos A

1-cos^2 A/cos A

Sin^2 A/cos A

Sin A*Sin A/cos A

tan A sin A

Hence proved.

Answer 2

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