Question

Which expression is equivalent to 3cos2(StartFraction theta Over 2 EndFraction) minus 3?

Three-halves(cos(ϴ) – 1)
Three-halves(cos(ϴ) – 5)
3(cos(ϴ) + 2)
3(cos(ϴ) + 1)

Answer 1

A

Explanation:

For the same reason as above. Credit to them.

Answer 2

It's a 3/2(cos(O)-1

Explanation:

I plugged all the equations in desmos and that was equal to the given equation.