What is 3cos(1/2 x-2pi)-1 ?

The solution to 3cos(1/2 x-2pi)-1 is 3cos(x/2)-1

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simplify 3cos(1/2 x-2pi)-1

simplify

3 cos (\frac{1}{2} x - 2 π) - 1

3 cos (\frac{x}{2}) - 1

Solution steps

3 cos (\frac{1}{2} x - 2 π) - 1

Rewrite using trig identities

= 3 cos (\frac{x}{2}) - 1

sin (2 π t - π)

sin (X + \frac{5 π}{6})

a tan (- 2)

cos (\frac{arcsin ( x )}{1})

- \frac{cos ( πn )}{πn}