find tan (-A) if cot (pie/2-A)= -1.48

Question

find tan (-A) if cot (pie/2-A)= -1.48

Answer 1

One of the co-function identities is:

meaning that tan(A) = -1.48

One of the negative angle identities is:

So tan(-A) = -tan(A) meaning that tan(-A) = -(-1.48) = 1.48