Question

HELP!!! Simplify cos^2 0 -1/ 4sin^2 0?

Answer 1

We need to simpify the given expression. The given expression to us is ,

Given Expression :-

`\sf\implies ( cos^2\theta -1)/(4 \ sin^2\theta )`

Using Identity :-

`\sf\implies \red{ sin^2\theta + cos^2\theta = 1}`

So that :-

`\sf\implies - sin^2\theta = cos^2\theta -1`

We have :-

`\sf\implies ( cos^2\theta -1)/(4 \ sin^2\theta ) \\\\\sf\implies( - sin^2\theta)/(4sin^2\theta)=\boxed{\sf -(1)/(4)}`

Hence the required answer is -1/4.