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f(x)=-2cos(2x)-2sin(x)−6−5−4−3−2−10123456−3-2.5−2-1.5−1-0.500.511.522.53xy

Exercise

−2cos⁡2x=2sin⁡x-2\cos2x=2\sin x

Step-by-step Solution

Learn how to solve problems step by step online. Solve the trigonometric equation -2cos(2x)=2sin(x). Simplify, dividing both sides of the equality by . Multiply both sides of the equation by -1. Grouping all terms to the left side of the equation. Multiply -1 times -1.
Solve the trigonometric equation -2cos(2x)=2sin(x)

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Final answer to the exercise

x=12π+2πn ,  n∈Zx=\frac{1}{2}\pi+2\pi n\:,\:\:n\in\Z

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−2cos2x=2sinx
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