Question

Calculate the value of $\sin (\pi -\theta )$ if $\sin \theta =0.57$

• A. $-0.57$
• B. $-0.43$
• C. $0$
• D. $0.43$
• E. $0.57$

Answer 1

The correct option is E $0.57$

$\sin (\pi -\theta )=\sin \pi \cos \theta -\cos \pi \sin \theta$

But $\sin \pi =0$ and $\cos \pi =-1$

So, $\sin (\pi -\theta )=\sin \theta =0.57$