Challenging Trigonometry.
Geometry
Level
3
The value of \(\sin 78^\circ -\sin 66^\circ-\sin 42^\circ + \sin 6^\circ\) can be represented in the form of \( - \frac{a}{b} \) where a and b are positive coprime integers.Find \(a+b\).
by
Yash Singhal