Question

Sin A minus 2 sin square A by 2 cos squre A minus Cos A equal to tanA​

Answer 1

Answer:

Step-by-step explanation:

Sin A - 2 Sin^3 A/ 2 cos ^3 A - cos A = tan

L.H.S. = Sin A ( 1 - 2 sin ^2 A)/ cos A ( 2cos^A-1)

= tan A ( sin^2A + cos ^2 A -2 sin^2A) / ( 2 cos^2A - sin^2A - cos ^2A)

= tan A

Hope it helps.....