If `(1+sint)(1+cost)=5/4` then find the value of `(1-sint)(1-cost)dot`

Explanation

To solve the problem, we start with the equation given:

\[ (1 + \sin t)(1 + \cos t) = \frac{5}{4} \]

### Step 1: Expand the left-hand side
We will expand the left-hand side of the equation:
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