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 ( 74+ )
Otras preguntas
Help would be appreciated.
A alpha particle is a
Which of the following statements about a plane is not true? 1. A plane can be thought of as flat. 2. The surface of a plane is made up of points. 3. A pla
While waiting at a bus stop, Jacinta looked up and noticed thay she could not see the mountains because of a thick layer of smog. Where does jacinta most likely
The laws of superposition and original horizontality are best applied to _____.
Is the sustainability of the atmosphere affected by the melting of the arctic ice cap
What factors contribute to tertiary structure stability?
Which of the following best defines the term neutral migration rate? a. dissenters b. the crusades c. push factors d. pull factors
What does Antonio mean in this speech to Sebastian in The Tempest? We all were sea-swallow'd, though some cast again, And by that destiny to perform an act W
Simplify -2[9 - (x + 7)]
