Question

Which statement best describes Marcos equation

Answer 1

The answer would be D. It is true, because the cosine function has a period of 2
`\pi`

Cosine function has period of 2
`\pi` because the function value will be same for variable that 2
`\pi` appart. In the problem, cos
`- \pi /2` and cos
`3 \pi /2` difference would be 4
`\pi`, which is 2 *
`2 \pi`. That means they both should have same value.