Write all the other trigonometric ratios of `/_A` in terms of sec A.

Explanation

To find all the trigonometric ratios of angle A in terms of sec A, we will derive the expressions for sine A, cos A, tan A, cot A, csc A, and sec A step by step.

### Step 1: Express cos A in terms of sec A
We know that:
\[ \cos A = \frac{1}{\sec A} \]

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