How many solutions are there to the equation \(\sin x = - 0.9\) where \(0 \le x \textless 360\)
2
1
3
How many solutions are there to the equation \(\sin x = 2\) where \(0 \le x \textless 360\)
0
Solve the equation \(\sin x = 0.5\) where \(0 \le x \textless 360\)
\[x = 30^\circ \,and\,x = 210^\circ\]
\[x = 210^\circ \,and\,x = 330^\circ\]
\[x = 30^\circ \,and\,x = 150^\circ\]
Solve the equation \(\cos x = - 0.5\) where \(0 \le x \textless 360\)
\[x = 60^\circ \,and\,x = 120^\circ\]
\[x = 120^\circ \,and\,x = 330^\circ\]
\[x = 120^\circ \,and\,x = 240^\circ\]
Solve the equation \(5\cos x - 2 = 0\) where \(0 \le x \textless 360\)
\[x = 66.4^\circ \,and\,x = 293.6^\circ\]
\[x = 66.4^\circ \,and\,x = 336.4^\circ\]
\[x = 113.6^\circ \,and\,x = 246.4^\circ\]