What is simplify-1+2cos(pi-2x) ?

The solution to simplify-1+2cos(pi-2x) is -1-2cos(2x)

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simplify-1+2cos(pi-2x)

simplify

- 1 + 2 cos (π - 2 x)

- 1 - 2 cos (2 x)

Solution steps

- 1 + 2 cos (π - 2 x)

Rewrite using trig identities

= - 1 + 2 (- cos (2 x))

Remove parentheses:

(- a) = - a

= - 1 - 2 cos (2 x)

2 sin (u + \frac{π}{3})

tan (arctan (x) + \frac{π}{4})

sin (15 0^{\circ} - x)

1 - sin (- x)

2 sin (x + 3 0^{\circ}) + 3 cos (x)

What is simplify-1+2cos(pi-2x) ?
The solution to simplify-1+2cos(pi-2x) is -1-2cos(2x)