Solve the equation `5cos^2 theta+7sin^2theta-6=0`

Explanation

To solve the equation \( 5 \cos^2 \theta + 7 \sin^2 \theta - 6 = 0 \), we can follow these steps:

### Step 1: Rewrite the equation
We start with the given equation:
\[ 5 \cos^2 \theta + 7 \sin^2 \theta - 6 = 0 \]

...