apply-the-most-suitable-technique-to-determine-the-solution-of-the-following-equ-15

Question

Apply the most suitable technique to determine the solution of the following equation within the interval [0, 2π), employing exact values whenever feasible or providing approximations accurate to four significant figures.
10 cos x + 5√2 sin 2x = 0

10 cos x + 5√2 sin 2x = 0

Accepted Answer

x = {π/2, 5π/4, 3π/2, 7π/4}

Answer

No solution

Answer

x = {π/2, 7π/6, 3π/2, 11π/6}

Answer

x = {π/2, 4π/3, 3π/2, 5π/3}