Rewrite in terms of sines and cosines.

Add full rotations of until the angle is between and .

The exact value of is .

The expression contains a division by The expression is undefined.

Undefined

Evaluate sec(-(3pi)/2)

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# Evaluate sec(-(3pi)/2)

Rewrite in terms of sines and cosines.

Add full rotations of until the angle is between and .

The exact value of is .

The expression contains a division by The expression is undefined.

Undefined

Evaluate sec(-(3pi)/2)