which-of-the-following-expressions-is-equivalent-to-sin78cos34cos78sin34sin78cir

Question

Which of the following expressions is equivalent to ﻿sin⁡78∘cos⁡34∘−cos⁡78∘sin⁡34∘\$$sin78^{\circ}$$\$$cos34^{\circ}$$-\$$cos78^{\circ}$$\$$sin34^{\circ}sin78$$∘cos34∘−cos78∘sin34∘﻿?

Accepted Answer

﻿sin⁡44∘\$$sin44^{\circ}sin44$$∘﻿

Answer

﻿sin⁡112∘\$$sin112^{\circ}sin112$$∘﻿

Answer

﻿cos⁡44∘\$$cos44^{\circ}cos44$$∘﻿

Answer

﻿tan⁡112∘\$$tan112^{\circ}tan112$$∘﻿

Which of the following expressions is equivalent to sin78∘cos34∘−cos78∘sin34∘\(\sin\)78^{\(\circ\)}\(\cos\)34^{\(\circ\)}-\(\cos\)78^{\(\circ\)}\(\sin\)34^{\(\circ\)}sin78∘cos34∘−cos78∘sin34∘?

Which of the following expressions is equivalent to $\(\sin\)78^{\(\circ\)}\(\cos\)34^{\(\circ\)}-\(\cos\)78^{\(\circ\)}\(\sin\)34^{\(\circ\)}$ ?