Step 1:

The trigonometric function is , where lies in quadrant III.

Definition of trigonometric function

Opposite side = 3 and adjacent side = 2.

Pythagorean theorem:

For right angled triangle, square of Hypotenuse is equal to sum of squares of other two sides.  

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Substitute opposite side = 3 and adjacent side = 2 in above expression.

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As lies in quadrant III, the value of secant function is negative.

Solutions :

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