safax
safax
01-07-2016
Mathematics
contestada
verify the identity cot(x-pi/2)=-tanx
Respuesta :
NiedzielnyMatematyk
NiedzielnyMatematyk
03-07-2016
[tex]\cot(x-\frac{\pi}{2}) = \dfrac{\cos(x-\frac{\pi}{2})}{\sin(x-\frac{\pi}{2})} =\dfrac{\cos(-(\frac{\pi}{2}-x))}{\sin(-(\frac{\pi}{2}-x))} =\dfrac{\cos(\frac{\pi}{2}-x)}{-\sin(\frac{\pi}{2}-x)} =\\=-\dfrac{\sin x}{\cos x} = -\tan x[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 77+ )
Otras preguntas
What is the approximate area of the shaded region? A. 178.5 square centimeters B. 100 square centimeters C. 78.5 square centimeters D. 21.5 square centimete
How far do glaciers move in a year?
All of the following weapons used in World War I had not been used in war before EXCEPT: a) the maxim gun b) hand grenades c) poisonous gas d) tanks
what if another company offers a rate of 0.05 per minute. How would you find the unit rate
How does the brain control the endocrine system?
Scientists decide the age of different rock layers by the things that they uncover in the rock. Which of the items below could scientists use to date a layer of
The cart below shown the number of cakes jenny bakes each month.agust 460 , sep 320, oct 440, Nov 560 and Dec 620 what is tje mean number of cakes jenny bakes i
How did constantinople's church of hagia sophia (ayasofya) demonstrate how the byzantine empire blended with the old roman empire?
The "A" in ACL stands for
In a cell information that controls the production of proteins must pass from the nucleus to
