Question

sin theta - 2 sin cube theta / 2 cos square theta - cos theta = tan theta. please prove this question?!!!!?

Answer 1

HELLO DEAR,



we know that:
cos 2θ = (2cos² θ - 1 )= (1 - 2sin² θ)

here,
(sinθ - 2sin³θ ) / (2cos³ θ -cos θ) 

= sinθ ( 1 - 2sin² θ) / cos θ (2cos² θ - 1 )

= sin θ ×cos 2θ / cos θ × cos 2θ

= tan θ


I HOPE ITS HELP YOU DEAR,
THANKS

Answer 2

Hope this answer helps you.....