Question

• [cost - sin 2t] is
equal
to​

Answer 1

$\cos(t) - \sin(2t)$

We know that;

${ \boxed{ \color{blue} \sin(2 \theta) = 2 \sin( \theta) \cos( \theta) }}$

$\implies \cos(t) - 2 \sin(t) \cos(t)$

$\therefore \color{orange} \cos(t) - \sin(2t) = \cos(t) (1 - 2 \sin t )$

HOPE THAT HELPS!!