What is cos(pi-θ)-cos(θ) ?

The solution to cos(pi-θ)-cos(θ) is -2cos(θ)

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simplify cos(pi-θ)-cos(θ)

simplify

cos (π - θ) - cos (θ)

- 2 cos (θ)

Solution steps

cos (π - θ) - cos (θ)

Rewrite using trig identities

= - cos (θ) - cos (θ)

Add similar elements:

- cos (θ) - cos (θ) = - 2 cos (θ)

= - 2 cos (θ)

cos (x + 20000 π)

cos (arctan (\frac{D}{C}))

cos (4 π x + \frac{π}{4})

- cos (3 x - 4 5^{\circ})

y sin (- cos (x - y))