# Need help wirh all three 5. Solve the equations: (a) cos(x + 1) - cos x...

###### Question:

need help wirh all three
5. Solve the equations: (a) cos(x + 1) - cos x – 1= 0 (b) cos 2x – cos 6x = 0 (c) sin 2x sin x = cos x

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