Question

Solve this..........

Answer 1

Here is ur solution....


please see the attached picture...

Answer 2

Heya☺

sina ( 1- 2sin^2a ) / cosa( 2cos^2a -1)

sina ( cos^2 a + sin^2a - 2sin^2a) / cosa(2cos^2a -1). { Because Sin^2a + cos^2a = 1


sina ( cos^2a - sin^2a ) / cosa (2cos^2a -1)

sina( cos^2a - ( 1-cos^2a ) / cosa (2cos^2a -1)

{ Because sin^2a = 1-cos^2a}

sina( cos^2a - 1+ cos^2a)/ cosa(2 cos^2a-1)

sina( 2cos^2a -1) / cosa(2 cos^2a -1)

sina / cosa

tana

Hence proved
–----–--------------

✌✌Hope it helps !