## Trigonometry (11th Edition) Clone

$$-\sin35^\circ=\sin(-35^\circ)$$ 20 goes with A.
$$-\sin35^\circ$$ Recall the negative-angle identities for sines: $$\sin(-\theta)=-\sin\theta$$ Therefore, we can rewrite $-\sin35^\circ$ as follows: $$-\sin35^\circ=\sin(-35^\circ)$$ Looking at the choices, we see that 20 is matched with A.