Question

Question #d3748

Answer 1

cot ((3pi)/4) = -1

Explanation:

`cot ((11pi)/4) = cot ((3pi)/4 + (8pi)/4) = cot ((3pi)/4 + 2pi) = cot ((3pi)/4)`
Trig table of special arcs gives:
`cot ((3pi)/4) = - 1`