What is the cotangent of -7pi/4?

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Answer 1 · 2015-11-10T14:00:42

1

cot -7pi/4=cot(-7*180/4)
=cot(-315)
=cot(-360+45)
=-cot(360-45)
=-(-cot 45)
=1

Answer 2 · 2015-11-10T15:47:42

Find #cot ((-7pi)/4)#

Ans: 1

#cot((-7pi)/4) = cot ((pi)/4 - (8pi)/4) = cot (pi/4 - 2pi) = cot (pi/4) = 1#